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Cadwyn fwyd - Wicipedia

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[o]" accesskey="o"><span class="vector-icon mw-ui-icon-logIn mw-ui-icon-wikimedia-logIn"></span> <span>Mewngofnodi</span></a></li> </ul> </div> </div> <div id="p-user-menu-anon-editor" class="vector-menu mw-portlet mw-portlet-user-menu-anon-editor" > <div class="vector-menu-heading"> Tudalennau ar gyfer golygyddion allgofnodedig <a href="/wiki/Cymorth:Cyflwyniad" aria-label="Dysgu mwy am olygu"><span>dysgu mwy</span></a> </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="pt-anoncontribs" class="mw-list-item"><a href="/wiki/Arbennig:MyContributions" title="Rhestr golygiadau o&#039;r cyfeiriad IP hwn [y]" accesskey="y"><span>Cyfraniadau</span></a></li><li id="pt-anontalk" class="mw-list-item"><a href="/wiki/Arbennig:MyTalk" title="Sgwrs ynglŷn â golygiadau o&#039;r cyfeiriad IP hwn [n]" accesskey="n"><span>Sgwrs</span></a></li> </ul> </div> </div> </div> </div> </nav> </div> </header> </div> <div class="mw-page-container"> <div class="mw-page-container-inner"> <div class="vector-sitenotice-container"> <div id="siteNotice"><!-- CentralNotice --></div> </div> <div class="vector-column-start"> <div class="vector-main-menu-container"> <div id="mw-navigation"> <nav id="mw-panel" class="vector-main-menu-landmark" aria-label="Safle"> <div id="vector-main-menu-pinned-container" class="vector-pinned-container"> </div> </nav> </div> </div> <div class="vector-sticky-pinned-container"> <nav id="mw-panel-toc" aria-label="Cynnwys" data-event-name="ui.sidebar-toc" class="mw-table-of-contents-container vector-toc-landmark"> <div id="vector-toc-pinned-container" class="vector-pinned-container"> <div id="vector-toc" class="vector-toc vector-pinnable-element"> <div class="vector-pinnable-header vector-toc-pinnable-header vector-pinnable-header-pinned" data-feature-name="toc-pinned" data-pinnable-element-id="vector-toc" > <h2 class="vector-pinnable-header-label">Cynnwys</h2> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-toc.pin">symud i&#039;r bar ochr</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-toc.unpin">cuddio</button> </div> <ul class="vector-toc-contents" id="mw-panel-toc-list"> <li id="toc-mw-content-text" class="vector-toc-list-item vector-toc-level-1"> <a href="#" class="vector-toc-link"> <div class="vector-toc-text">Y dechrau</div> </a> </li> <li id="toc-Trefn_cadwyn_fwyd" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Trefn_cadwyn_fwyd"> <div class="vector-toc-text"> <span class="vector-toc-numb">1</span> <span>Trefn cadwyn fwyd</span> </div> </a> <ul id="toc-Trefn_cadwyn_fwyd-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Cynhyrchydd" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Cynhyrchydd"> <div class="vector-toc-text"> <span class="vector-toc-numb">2</span> <span>Cynhyrchydd</span> </div> </a> <ul id="toc-Cynhyrchydd-sublist" class="vector-toc-list"> </ul> </li> </ul> </div> </div> </nav> </div> </div> <div class="mw-content-container"> <main id="content" class="mw-body"> <header class="mw-body-header vector-page-titlebar"> <nav aria-label="Cynnwys" class="vector-toc-landmark"> <div id="vector-page-titlebar-toc" class="vector-dropdown vector-page-titlebar-toc vector-button-flush-left" > <input type="checkbox" id="vector-page-titlebar-toc-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-titlebar-toc" class="vector-dropdown-checkbox " aria-label="Toglo&#039;r tabl cynnwys" > <label id="vector-page-titlebar-toc-label" for="vector-page-titlebar-toc-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-listBullet mw-ui-icon-wikimedia-listBullet"></span> <span class="vector-dropdown-label-text">Toglo&#039;r tabl cynnwys</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-titlebar-toc-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-main">Cadwyn fwyd</span></h1> <div id="p-lang-btn" class="vector-dropdown mw-portlet mw-portlet-lang" > <input type="checkbox" id="p-lang-btn-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-p-lang-btn" class="vector-dropdown-checkbox mw-interlanguage-selector" aria-label="Ewch i erthygl mewn iaith arall. Ar gael mewn 73 iaith" > <label id="p-lang-btn-label" for="p-lang-btn-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive mw-portlet-lang-heading-73" aria-hidden="true" ><span class="vector-icon mw-ui-icon-language-progressive mw-ui-icon-wikimedia-language-progressive"></span> <span class="vector-dropdown-label-text">73 iaith</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-af mw-list-item"><a href="https://af.wikipedia.org/wiki/Voedselketting" title="Voedselketting - Affricaneg" lang="af" hreflang="af" data-title="Voedselketting" data-language-autonym="Afrikaans" data-language-local-name="Affricaneg" class="interlanguage-link-target"><span>Afrikaans</span></a></li><li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/%D8%B3%D9%84%D8%B3%D9%84%D8%A9_%D8%BA%D8%B0%D8%A7%D8%A6%D9%8A%D8%A9" title="سلسلة غذائية - Arabeg" lang="ar" hreflang="ar" data-title="سلسلة غذائية" data-language-autonym="العربية" data-language-local-name="Arabeg" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-az mw-list-item"><a href="https://az.wikipedia.org/wiki/Qida_z%C9%99nciri" title="Qida zənciri - Aserbaijaneg" lang="az" hreflang="az" data-title="Qida zənciri" data-language-autonym="Azərbaycanca" data-language-local-name="Aserbaijaneg" class="interlanguage-link-target"><span>Azərbaycanca</span></a></li><li class="interlanguage-link interwiki-bg mw-list-item"><a href="https://bg.wikipedia.org/wiki/%D0%A5%D1%80%D0%B0%D0%BD%D0%B8%D1%82%D0%B5%D0%BB%D0%BD%D0%B0_%D0%B2%D0%B5%D1%80%D0%B8%D0%B3%D0%B0" title="Хранителна верига - Bwlgareg" lang="bg" hreflang="bg" data-title="Хранителна верига" data-language-autonym="Български" data-language-local-name="Bwlgareg" class="interlanguage-link-target"><span>Български</span></a></li><li class="interlanguage-link interwiki-bn mw-list-item"><a href="https://bn.wikipedia.org/wiki/%E0%A6%96%E0%A6%BE%E0%A6%A6%E0%A7%8D%E0%A6%AF%E0%A6%B6%E0%A7%83%E0%A6%99%E0%A7%8D%E0%A6%96%E0%A6%B2" title="খাদ্যশৃঙ্খল - Bengaleg" lang="bn" hreflang="bn" data-title="খাদ্যশৃঙ্খল" data-language-autonym="বাংলা" data-language-local-name="Bengaleg" class="interlanguage-link-target"><span>বাংলা</span></a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/Xarxa_tr%C3%B2fica" title="Xarxa tròfica - Catalaneg" lang="ca" hreflang="ca" data-title="Xarxa tròfica" data-language-autonym="Català" data-language-local-name="Catalaneg" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-ckb mw-list-item"><a href="https://ckb.wikipedia.org/wiki/%D8%B2%D9%86%D8%AC%DB%8C%D8%B1%DB%95%DB%8C_%D8%A8%DA%98%DB%8C%D9%88" title="زنجیرەی بژیو - Cwrdeg Sorani" lang="ckb" hreflang="ckb" data-title="زنجیرەی بژیو" data-language-autonym="کوردی" data-language-local-name="Cwrdeg Sorani" class="interlanguage-link-target"><span>کوردی</span></a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/Potravn%C3%AD_%C5%99et%C4%9Bzec" title="Potravní řetězec - Tsieceg" lang="cs" hreflang="cs" data-title="Potravní řetězec" data-language-autonym="Čeština" data-language-local-name="Tsieceg" class="interlanguage-link-target"><span>Čeština</span></a></li><li class="interlanguage-link interwiki-csb mw-list-item"><a href="https://csb.wikipedia.org/wiki/J%C3%B4dny_li%C5%84cuch" title="Jôdny lińcuch - Kashubian" lang="csb" hreflang="csb" data-title="Jôdny lińcuch" data-language-autonym="Kaszëbsczi" data-language-local-name="Kashubian" class="interlanguage-link-target"><span>Kaszëbsczi</span></a></li><li class="interlanguage-link interwiki-da mw-list-item"><a href="https://da.wikipedia.org/wiki/F%C3%B8dek%C3%A6de" title="Fødekæde - Daneg" lang="da" hreflang="da" data-title="Fødekæde" data-language-autonym="Dansk" data-language-local-name="Daneg" class="interlanguage-link-target"><span>Dansk</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/Nahrungskette" title="Nahrungskette - Almaeneg" lang="de" hreflang="de" data-title="Nahrungskette" data-language-autonym="Deutsch" data-language-local-name="Almaeneg" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-dv mw-list-item"><a href="https://dv.wikipedia.org/wiki/%DE%86%DE%A7%DE%84%DE%AF%DE%8C%DE%A6%DE%86%DE%AC%DE%8C%DE%A9%DE%8E%DE%AC_%DE%87%DE%A6%DE%82%DE%B0%DE%84%DE%A6%DE%8D%DE%A6%DE%82%DE%B0" title="ކާބޯތަކެތީގެ އަންބަލަން - Difehi" lang="dv" hreflang="dv" data-title="ކާބޯތަކެތީގެ އަންބަލަން" data-language-autonym="ދިވެހިބަސް" data-language-local-name="Difehi" class="interlanguage-link-target"><span>ދިވެހިބަސް</span></a></li><li class="interlanguage-link interwiki-el mw-list-item"><a href="https://el.wikipedia.org/wiki/%CE%A4%CF%81%CE%BF%CF%86%CE%B9%CE%BA%CE%AE_%CE%B1%CE%BB%CF%85%CF%83%CE%AF%CE%B4%CE%B1" title="Τροφική αλυσίδα - Groeg" lang="el" hreflang="el" data-title="Τροφική αλυσίδα" data-language-autonym="Ελληνικά" data-language-local-name="Groeg" class="interlanguage-link-target"><span>Ελληνικά</span></a></li><li class="interlanguage-link interwiki-en mw-list-item"><a href="https://en.wikipedia.org/wiki/Food_chain" title="Food chain - Saesneg" lang="en" hreflang="en" data-title="Food chain" data-language-autonym="English" data-language-local-name="Saesneg" class="interlanguage-link-target"><span>English</span></a></li><li class="interlanguage-link interwiki-eo mw-list-item"><a href="https://eo.wikipedia.org/wiki/Man%C4%9Do%C4%89eno" title="Manĝoĉeno - Esperanto" lang="eo" hreflang="eo" data-title="Manĝoĉeno" data-language-autonym="Esperanto" data-language-local-name="Esperanto" class="interlanguage-link-target"><span>Esperanto</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/Cadena_tr%C3%B3fica" title="Cadena trófica - Sbaeneg" lang="es" hreflang="es" data-title="Cadena trófica" data-language-autonym="Español" data-language-local-name="Sbaeneg" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-et mw-list-item"><a href="https://et.wikipedia.org/wiki/Toitumisahel" title="Toitumisahel - Estoneg" lang="et" hreflang="et" data-title="Toitumisahel" data-language-autonym="Eesti" data-language-local-name="Estoneg" class="interlanguage-link-target"><span>Eesti</span></a></li><li class="interlanguage-link interwiki-eu mw-list-item"><a href="https://eu.wikipedia.org/wiki/Kate_trofiko" title="Kate trofiko - Basgeg" lang="eu" hreflang="eu" data-title="Kate trofiko" data-language-autonym="Euskara" data-language-local-name="Basgeg" class="interlanguage-link-target"><span>Euskara</span></a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%D8%B2%D9%86%D8%AC%DB%8C%D8%B1%D9%87_%D8%BA%D8%B0%D8%A7%DB%8C%DB%8C" title="زنجیره غذایی - Perseg" lang="fa" hreflang="fa" data-title="زنجیره غذایی" data-language-autonym="فارسی" data-language-local-name="Perseg" class="interlanguage-link-target"><span>فارسی</span></a></li><li class="interlanguage-link interwiki-fi mw-list-item"><a href="https://fi.wikipedia.org/wiki/Ravintoketju" title="Ravintoketju - Ffinneg" lang="fi" hreflang="fi" data-title="Ravintoketju" data-language-autonym="Suomi" data-language-local-name="Ffinneg" class="interlanguage-link-target"><span>Suomi</span></a></li><li class="interlanguage-link interwiki-fr badge-Q70893996 mw-list-item" title=""><a href="https://fr.wikipedia.org/wiki/Cha%C3%AEne_alimentaire" title="Chaîne alimentaire - Ffrangeg" lang="fr" hreflang="fr" data-title="Chaîne alimentaire" data-language-autonym="Français" data-language-local-name="Ffrangeg" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-ga mw-list-item"><a href="https://ga.wikipedia.org/wiki/Biashlabhra" title="Biashlabhra - Gwyddeleg" lang="ga" hreflang="ga" data-title="Biashlabhra" data-language-autonym="Gaeilge" data-language-local-name="Gwyddeleg" class="interlanguage-link-target"><span>Gaeilge</span></a></li><li class="interlanguage-link interwiki-gl mw-list-item"><a href="https://gl.wikipedia.org/wiki/Cadea_tr%C3%B3fica" title="Cadea trófica - Galisieg" lang="gl" hreflang="gl" data-title="Cadea trófica" data-language-autonym="Galego" data-language-local-name="Galisieg" class="interlanguage-link-target"><span>Galego</span></a></li><li class="interlanguage-link interwiki-he mw-list-item"><a href="https://he.wikipedia.org/wiki/%D7%9E%D7%90%D7%A8%D7%92_%D7%9E%D7%96%D7%95%D7%9F" title="מארג מזון - Hebraeg" lang="he" hreflang="he" data-title="מארג מזון" data-language-autonym="עברית" data-language-local-name="Hebraeg" class="interlanguage-link-target"><span>עברית</span></a></li><li class="interlanguage-link interwiki-hi mw-list-item"><a href="https://hi.wikipedia.org/wiki/%E0%A4%96%E0%A4%BE%E0%A4%A6%E0%A5%8D%E0%A4%AF_%E0%A4%B6%E0%A5%83%E0%A4%82%E0%A4%96%E0%A4%B2%E0%A4%BE" title="खाद्य शृंखला - Hindi" lang="hi" hreflang="hi" data-title="खाद्य शृंखला" data-language-autonym="हिन्दी" data-language-local-name="Hindi" class="interlanguage-link-target"><span>हिन्दी</span></a></li><li class="interlanguage-link interwiki-hr mw-list-item"><a href="https://hr.wikipedia.org/wiki/Hranidbeni_lanac" title="Hranidbeni lanac - Croateg" lang="hr" hreflang="hr" data-title="Hranidbeni lanac" data-language-autonym="Hrvatski" data-language-local-name="Croateg" class="interlanguage-link-target"><span>Hrvatski</span></a></li><li class="interlanguage-link interwiki-ht mw-list-item"><a href="https://ht.wikipedia.org/wiki/Rezo_alimant%C3%A8" title="Rezo alimantè - Creol Haiti" lang="ht" hreflang="ht" data-title="Rezo alimantè" data-language-autonym="Kreyòl ayisyen" data-language-local-name="Creol Haiti" class="interlanguage-link-target"><span>Kreyòl ayisyen</span></a></li><li class="interlanguage-link interwiki-hu mw-list-item"><a href="https://hu.wikipedia.org/wiki/T%C3%A1pl%C3%A1l%C3%A9kl%C3%A1nc" title="Tápláléklánc - Hwngareg" lang="hu" hreflang="hu" data-title="Tápláléklánc" data-language-autonym="Magyar" data-language-local-name="Hwngareg" class="interlanguage-link-target"><span>Magyar</span></a></li><li class="interlanguage-link interwiki-hy mw-list-item"><a href="https://hy.wikipedia.org/wiki/%D5%8D%D5%B6%D5%B6%D5%A4%D5%A1%D5%B5%D5%AB%D5%B6_%D5%AF%D5%A1%D5%BA%D5%A5%D6%80" title="Սննդային կապեր - Armeneg" lang="hy" hreflang="hy" data-title="Սննդային կապեր" data-language-autonym="Հայերեն" data-language-local-name="Armeneg" class="interlanguage-link-target"><span>Հայերեն</span></a></li><li class="interlanguage-link interwiki-id mw-list-item"><a href="https://id.wikipedia.org/wiki/Rantai_makanan" title="Rantai makanan - Indoneseg" lang="id" hreflang="id" data-title="Rantai makanan" data-language-autonym="Bahasa Indonesia" data-language-local-name="Indoneseg" class="interlanguage-link-target"><span>Bahasa Indonesia</span></a></li><li class="interlanguage-link interwiki-ig mw-list-item"><a href="https://ig.wikipedia.org/wiki/Nri_yinye" title="Nri yinye - Igbo" lang="ig" hreflang="ig" data-title="Nri yinye" data-language-autonym="Igbo" data-language-local-name="Igbo" class="interlanguage-link-target"><span>Igbo</span></a></li><li class="interlanguage-link interwiki-io mw-list-item"><a href="https://io.wikipedia.org/wiki/Nutriva_kateno" title="Nutriva kateno - Ido" lang="io" hreflang="io" data-title="Nutriva kateno" data-language-autonym="Ido" data-language-local-name="Ido" class="interlanguage-link-target"><span>Ido</span></a></li><li class="interlanguage-link interwiki-is mw-list-item"><a href="https://is.wikipedia.org/wiki/F%C3%A6%C3%B0uke%C3%B0ja" title="Fæðukeðja - Islandeg" lang="is" hreflang="is" data-title="Fæðukeðja" data-language-autonym="Íslenska" data-language-local-name="Islandeg" class="interlanguage-link-target"><span>Íslenska</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Catena_alimentare" title="Catena alimentare - Eidaleg" lang="it" hreflang="it" data-title="Catena alimentare" data-language-autonym="Italiano" data-language-local-name="Eidaleg" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/%E9%A3%9F%E7%89%A9%E9%80%A3%E9%8E%96" title="食物連鎖 - Japaneeg" lang="ja" hreflang="ja" data-title="食物連鎖" data-language-autonym="日本語" data-language-local-name="Japaneeg" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-ka mw-list-item"><a href="https://ka.wikipedia.org/wiki/%E1%83%99%E1%83%95%E1%83%94%E1%83%91%E1%83%98%E1%83%A1_%E1%83%AF%E1%83%90%E1%83%AD%E1%83%95%E1%83%98" title="კვების ჯაჭვი - Georgeg" lang="ka" hreflang="ka" data-title="კვების ჯაჭვი" data-language-autonym="ქართული" data-language-local-name="Georgeg" class="interlanguage-link-target"><span>ქართული</span></a></li><li class="interlanguage-link interwiki-kk mw-list-item"><a href="https://kk.wikipedia.org/wiki/%D2%9A%D0%BE%D1%80%D0%B5%D0%BA%D1%82%D1%96%D0%BA_%D1%82%D1%96%D0%B7%D0%B1%D0%B5%D0%BA" title="Қоректік тізбек - Casacheg" lang="kk" hreflang="kk" data-title="Қоректік тізбек" data-language-autonym="Қазақша" data-language-local-name="Casacheg" class="interlanguage-link-target"><span>Қазақша</span></a></li><li class="interlanguage-link interwiki-kn mw-list-item"><a href="https://kn.wikipedia.org/wiki/%E0%B2%86%E0%B2%B9%E0%B2%BE%E0%B2%B0_%E0%B2%B8%E0%B2%B0%E0%B2%AA%E0%B2%B3%E0%B2%BF" title="ಆಹಾರ ಸರಪಳಿ - Kannada" lang="kn" hreflang="kn" data-title="ಆಹಾರ ಸರಪಳಿ" data-language-autonym="ಕನ್ನಡ" data-language-local-name="Kannada" class="interlanguage-link-target"><span>ಕನ್ನಡ</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/%EB%A8%B9%EC%9D%B4_%EC%82%AC%EC%8A%AC" title="먹이 사슬 - Coreeg" lang="ko" hreflang="ko" data-title="먹이 사슬" data-language-autonym="한국어" data-language-local-name="Coreeg" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-ky mw-list-item"><a href="https://ky.wikipedia.org/wiki/%D0%A2%D1%80%D0%BE%D1%84%D0%B8%D0%BA%D0%B0%D0%BB%D1%8B%D0%BA_%D1%87%D1%8B%D0%BD%D0%B6%D1%8B%D1%80%D0%BB%D0%B0%D1%80" title="Трофикалык чынжырлар - Cirgiseg" lang="ky" hreflang="ky" data-title="Трофикалык чынжырлар" data-language-autonym="Кыргызча" data-language-local-name="Cirgiseg" class="interlanguage-link-target"><span>Кыргызча</span></a></li><li class="interlanguage-link interwiki-lt mw-list-item"><a href="https://lt.wikipedia.org/wiki/Mitybos_grandin%C4%97" title="Mitybos grandinė - Lithwaneg" lang="lt" hreflang="lt" data-title="Mitybos grandinė" data-language-autonym="Lietuvių" data-language-local-name="Lithwaneg" class="interlanguage-link-target"><span>Lietuvių</span></a></li><li class="interlanguage-link interwiki-lv mw-list-item"><a href="https://lv.wikipedia.org/wiki/Bar%C4%ABbas_%C4%B7%C4%93de" title="Barības ķēde - Latfieg" lang="lv" hreflang="lv" data-title="Barības ķēde" data-language-autonym="Latviešu" data-language-local-name="Latfieg" class="interlanguage-link-target"><span>Latviešu</span></a></li><li class="interlanguage-link interwiki-mk mw-list-item"><a href="https://mk.wikipedia.org/wiki/%D0%9B%D0%B0%D0%BD%D0%B5%D1%86_%D0%BD%D0%B0_%D0%B8%D1%81%D1%85%D1%80%D0%B0%D0%BD%D0%B0" title="Ланец на исхрана - Macedoneg" lang="mk" hreflang="mk" data-title="Ланец на исхрана" data-language-autonym="Македонски" data-language-local-name="Macedoneg" class="interlanguage-link-target"><span>Македонски</span></a></li><li class="interlanguage-link interwiki-ml mw-list-item"><a href="https://ml.wikipedia.org/wiki/%E0%B4%86%E0%B4%B9%E0%B4%BE%E0%B4%B0%E0%B4%B6%E0%B5%83%E0%B4%96%E0%B4%B2" title="ആഹാരശൃഖല - Malayalam" lang="ml" hreflang="ml" data-title="ആഹാരശൃഖല" data-language-autonym="മലയാളം" data-language-local-name="Malayalam" class="interlanguage-link-target"><span>മലയാളം</span></a></li><li class="interlanguage-link interwiki-mr mw-list-item"><a href="https://mr.wikipedia.org/wiki/%E0%A4%85%E0%A4%A8%E0%A5%8D%E0%A4%A8%E0%A4%B8%E0%A4%BE%E0%A4%96%E0%A4%B3%E0%A5%80" title="अन्नसाखळी - Marathi" lang="mr" hreflang="mr" data-title="अन्नसाखळी" data-language-autonym="मराठी" data-language-local-name="Marathi" class="interlanguage-link-target"><span>मराठी</span></a></li><li class="interlanguage-link interwiki-ms mw-list-item"><a href="https://ms.wikipedia.org/wiki/Rantai_makanan" title="Rantai makanan - Maleieg" lang="ms" hreflang="ms" data-title="Rantai makanan" data-language-autonym="Bahasa Melayu" data-language-local-name="Maleieg" class="interlanguage-link-target"><span>Bahasa Melayu</span></a></li><li class="interlanguage-link interwiki-my mw-list-item"><a href="https://my.wikipedia.org/wiki/%E1%80%A1%E1%80%85%E1%80%AC%E1%80%80%E1%80%BD%E1%80%84%E1%80%BA%E1%80%B8%E1%80%86%E1%80%80%E1%80%BA" title="အစာကွင်းဆက် - Byrmaneg" lang="my" hreflang="my" data-title="အစာကွင်းဆက်" data-language-autonym="မြန်မာဘာသာ" data-language-local-name="Byrmaneg" class="interlanguage-link-target"><span>မြန်မာဘာသာ</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Voedselketen" title="Voedselketen - Iseldireg" lang="nl" hreflang="nl" data-title="Voedselketen" data-language-autonym="Nederlands" data-language-local-name="Iseldireg" class="interlanguage-link-target"><span>Nederlands</span></a></li><li class="interlanguage-link interwiki-nn mw-list-item"><a href="https://nn.wikipedia.org/wiki/N%C3%A6ringskjede" title="Næringskjede - Norwyeg Nynorsk" lang="nn" hreflang="nn" data-title="Næringskjede" data-language-autonym="Norsk nynorsk" data-language-local-name="Norwyeg Nynorsk" class="interlanguage-link-target"><span>Norsk nynorsk</span></a></li><li class="interlanguage-link interwiki-no mw-list-item"><a href="https://no.wikipedia.org/wiki/N%C3%A6ringskjede" title="Næringskjede - Norwyeg Bokmål" lang="nb" hreflang="nb" data-title="Næringskjede" data-language-autonym="Norsk bokmål" data-language-local-name="Norwyeg Bokmål" class="interlanguage-link-target"><span>Norsk bokmål</span></a></li><li class="interlanguage-link interwiki-pa mw-list-item"><a href="https://pa.wikipedia.org/wiki/%E0%A8%96%E0%A9%81%E0%A8%B0%E0%A8%BE%E0%A8%95_%E0%A8%B2%E0%A9%9C%E0%A9%80" title="ਖੁਰਾਕ ਲੜੀ - Pwnjabeg" lang="pa" hreflang="pa" data-title="ਖੁਰਾਕ ਲੜੀ" data-language-autonym="ਪੰਜਾਬੀ" data-language-local-name="Pwnjabeg" class="interlanguage-link-target"><span>ਪੰਜਾਬੀ</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/%C5%81a%C5%84cuch_pokarmowy" title="Łańcuch pokarmowy - Pwyleg" lang="pl" hreflang="pl" data-title="Łańcuch pokarmowy" data-language-autonym="Polski" data-language-local-name="Pwyleg" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/Cadeia_alimentar" title="Cadeia alimentar - Portiwgaleg" lang="pt" hreflang="pt" data-title="Cadeia alimentar" data-language-autonym="Português" data-language-local-name="Portiwgaleg" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-ro mw-list-item"><a href="https://ro.wikipedia.org/wiki/Lan%C8%9B_trofic" title="Lanț trofic - Rwmaneg" lang="ro" hreflang="ro" data-title="Lanț trofic" data-language-autonym="Română" data-language-local-name="Rwmaneg" class="interlanguage-link-target"><span>Română</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/%D0%9F%D0%B8%D1%89%D0%B5%D0%B2%D0%B0%D1%8F_%D1%86%D0%B5%D0%BF%D1%8C" title="Пищевая цепь - Rwseg" lang="ru" hreflang="ru" data-title="Пищевая цепь" data-language-autonym="Русский" data-language-local-name="Rwseg" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-scn mw-list-item"><a href="https://scn.wikipedia.org/wiki/Catina_alimintari" title="Catina alimintari - Sisileg" lang="scn" hreflang="scn" data-title="Catina alimintari" data-language-autonym="Sicilianu" data-language-local-name="Sisileg" class="interlanguage-link-target"><span>Sicilianu</span></a></li><li class="interlanguage-link interwiki-sh mw-list-item"><a href="https://sh.wikipedia.org/wiki/Hranidbeni_lanac" title="Hranidbeni lanac - Serbo-Croateg" lang="sh" hreflang="sh" data-title="Hranidbeni lanac" data-language-autonym="Srpskohrvatski / српскохрватски" data-language-local-name="Serbo-Croateg" class="interlanguage-link-target"><span>Srpskohrvatski / српскохрватски</span></a></li><li class="interlanguage-link interwiki-simple mw-list-item"><a href="https://simple.wikipedia.org/wiki/Food_chain" title="Food chain - Simple English" lang="en-simple" hreflang="en-simple" data-title="Food chain" data-language-autonym="Simple English" data-language-local-name="Simple English" class="interlanguage-link-target"><span>Simple English</span></a></li><li class="interlanguage-link interwiki-sk mw-list-item"><a href="https://sk.wikipedia.org/wiki/Potravov%C3%BD_re%C5%A5azec" title="Potravový reťazec - Slofaceg" lang="sk" hreflang="sk" data-title="Potravový reťazec" data-language-autonym="Slovenčina" data-language-local-name="Slofaceg" class="interlanguage-link-target"><span>Slovenčina</span></a></li><li class="interlanguage-link interwiki-sl mw-list-item"><a href="https://sl.wikipedia.org/wiki/Prehranjevalna_veriga" title="Prehranjevalna veriga - Slofeneg" lang="sl" hreflang="sl" data-title="Prehranjevalna veriga" data-language-autonym="Slovenščina" data-language-local-name="Slofeneg" class="interlanguage-link-target"><span>Slovenščina</span></a></li><li class="interlanguage-link interwiki-sq mw-list-item"><a href="https://sq.wikipedia.org/wiki/Zinxhiri_ushqimor" title="Zinxhiri ushqimor - Albaneg" lang="sq" hreflang="sq" data-title="Zinxhiri ushqimor" data-language-autonym="Shqip" data-language-local-name="Albaneg" class="interlanguage-link-target"><span>Shqip</span></a></li><li class="interlanguage-link interwiki-sr mw-list-item"><a href="https://sr.wikipedia.org/wiki/%D0%9B%D0%B0%D0%BD%D0%B0%D1%86_%D0%B8%D1%81%D1%85%D1%80%D0%B0%D0%BD%D0%B5" title="Ланац исхране - Serbeg" lang="sr" hreflang="sr" data-title="Ланац исхране" data-language-autonym="Српски / srpski" data-language-local-name="Serbeg" class="interlanguage-link-target"><span>Српски / srpski</span></a></li><li class="interlanguage-link interwiki-sv mw-list-item"><a href="https://sv.wikipedia.org/wiki/N%C3%A4ringskedja" title="Näringskedja - Swedeg" lang="sv" hreflang="sv" data-title="Näringskedja" data-language-autonym="Svenska" data-language-local-name="Swedeg" class="interlanguage-link-target"><span>Svenska</span></a></li><li class="interlanguage-link interwiki-sw mw-list-item"><a href="https://sw.wikipedia.org/wiki/Mtando_chakula" title="Mtando chakula - Swahili" lang="sw" hreflang="sw" data-title="Mtando chakula" data-language-autonym="Kiswahili" data-language-local-name="Swahili" class="interlanguage-link-target"><span>Kiswahili</span></a></li><li class="interlanguage-link interwiki-ta mw-list-item"><a href="https://ta.wikipedia.org/wiki/%E0%AE%89%E0%AE%A3%E0%AE%B5%E0%AF%81%E0%AE%9A%E0%AF%8D_%E0%AE%9A%E0%AE%99%E0%AF%8D%E0%AE%95%E0%AE%BF%E0%AE%B2%E0%AE%BF" title="உணவுச் சங்கிலி - Tamileg" lang="ta" hreflang="ta" data-title="உணவுச் சங்கிலி" data-language-autonym="தமிழ்" data-language-local-name="Tamileg" class="interlanguage-link-target"><span>தமிழ்</span></a></li><li class="interlanguage-link interwiki-te mw-list-item"><a href="https://te.wikipedia.org/wiki/%E0%B0%86%E0%B0%B9%E0%B0%BE%E0%B0%B0%E0%B0%AA%E0%B1%81_%E0%B0%97%E0%B1%8A%E0%B0%B2%E0%B1%81%E0%B0%B8%E0%B1%81" title="ఆహారపు గొలుసు - Telugu" lang="te" hreflang="te" data-title="ఆహారపు గొలుసు" data-language-autonym="తెలుగు" data-language-local-name="Telugu" class="interlanguage-link-target"><span>తెలుగు</span></a></li><li class="interlanguage-link interwiki-th mw-list-item"><a href="https://th.wikipedia.org/wiki/%E0%B9%82%E0%B8%8B%E0%B9%88%E0%B8%AD%E0%B8%B2%E0%B8%AB%E0%B8%B2%E0%B8%A3" title="โซ่อาหาร - Thai" lang="th" hreflang="th" data-title="โซ่อาหาร" data-language-autonym="ไทย" data-language-local-name="Thai" class="interlanguage-link-target"><span>ไทย</span></a></li><li class="interlanguage-link interwiki-tr mw-list-item"><a href="https://tr.wikipedia.org/wiki/Besin_zinciri" title="Besin zinciri - Tyrceg" lang="tr" hreflang="tr" data-title="Besin zinciri" data-language-autonym="Türkçe" data-language-local-name="Tyrceg" class="interlanguage-link-target"><span>Türkçe</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/%D0%9B%D0%B0%D0%BD%D1%86%D1%8E%D0%B3_%D0%B6%D0%B8%D0%B2%D0%BB%D0%B5%D0%BD%D0%BD%D1%8F" title="Ланцюг живлення - Wcreineg" lang="uk" hreflang="uk" data-title="Ланцюг живлення" data-language-autonym="Українська" data-language-local-name="Wcreineg" class="interlanguage-link-target"><span>Українська</span></a></li><li class="interlanguage-link interwiki-vi mw-list-item"><a href="https://vi.wikipedia.org/wiki/Chu%E1%BB%97i_th%E1%BB%A9c_%C4%83n" title="Chuỗi thức ăn - Fietnameg" lang="vi" hreflang="vi" data-title="Chuỗi thức ăn" data-language-autonym="Tiếng Việt" data-language-local-name="Fietnameg" class="interlanguage-link-target"><span>Tiếng Việt</span></a></li><li class="interlanguage-link interwiki-wuu mw-list-item"><a href="https://wuu.wikipedia.org/wiki/%E9%A3%9F%E7%89%A9%E9%93%BE" title="食物链 - Wu Tsieineaidd" lang="wuu" hreflang="wuu" data-title="食物链" data-language-autonym="吴语" data-language-local-name="Wu Tsieineaidd" class="interlanguage-link-target"><span>吴语</span></a></li><li class="interlanguage-link interwiki-zh mw-list-item"><a href="https://zh.wikipedia.org/wiki/%E9%A3%9F%E7%89%A9%E9%8F%88" title="食物鏈 - Tsieinëeg" lang="zh" hreflang="zh" data-title="食物鏈" data-language-autonym="中文" data-language-local-name="Tsieinëeg" class="interlanguage-link-target"><span>中文</span></a></li><li class="interlanguage-link interwiki-zh-yue mw-list-item"><a href="https://zh-yue.wikipedia.org/wiki/%E9%A3%9F%E7%89%A9%E9%8F%88" title="食物鏈 - Cantoneeg" lang="yue" hreflang="yue" data-title="食物鏈" data-language-autonym="粵語" data-language-local-name="Cantoneeg" class="interlanguage-link-target"><span>粵語</span></a></li> </ul> <div class="after-portlet after-portlet-lang"><span class="wb-langlinks-edit wb-langlinks-link"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q159462#sitelinks-wikipedia" title="Golygu dolenni rhyngwici" class="wbc-editpage">Golygu dolenni</a></span></div> </div> </div> </div> </header> <div class="vector-page-toolbar"> <div class="vector-page-toolbar-container"> <div id="left-navigation"> <nav aria-label="Parthau"> <div id="p-associated-pages" class="vector-menu vector-menu-tabs mw-portlet mw-portlet-associated-pages" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-nstab-main" class="selected vector-tab-noicon mw-list-item"><a href="/wiki/Cadwyn_fwyd" title="Gweld y dudalen bwnc [c]" accesskey="c"><span>Erthygl</span></a></li><li id="ca-talk" class="new vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Sgwrs:Cadwyn_fwyd&amp;action=edit&amp;redlink=1" rel="discussion" class="new" title="Sgwrsio am y dudalen (dim tudalen ar gael) [t]" accesskey="t"><span>Sgwrs</span></a></li> </ul> </div> </div> <div id="vector-variants-dropdown" class="vector-dropdown emptyPortlet" > <input type="checkbox" id="vector-variants-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-variants-dropdown" class="vector-dropdown-checkbox " aria-label="Newid amrywiad iaith" > <label id="vector-variants-dropdown-label" for="vector-variants-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet" aria-hidden="true" ><span class="vector-dropdown-label-text">Cymraeg</span> </label> <div class="vector-dropdown-content"> <div id="p-variants" class="vector-menu mw-portlet mw-portlet-variants emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> </div> </div> </nav> </div> <div id="right-navigation" class="vector-collapsible"> <nav aria-label="Golygon"> <div id="p-views" class="vector-menu vector-menu-tabs mw-portlet mw-portlet-views" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-view" class="selected vector-tab-noicon mw-list-item"><a href="/wiki/Cadwyn_fwyd"><span>Darllen</span></a></li><li id="ca-ve-edit" class="vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Cadwyn_fwyd&amp;veaction=edit" title="Golygu&#039;r dudalen hon [v]" accesskey="v"><span>Golygu</span></a></li><li id="ca-edit" class="collapsible vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Cadwyn_fwyd&amp;action=edit" title="Golygu cod ffynhonnell y dudalen hon [e]" accesskey="e"><span>Golygu cod</span></a></li><li id="ca-history" class="vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Cadwyn_fwyd&amp;action=history" title="Fersiynau cynt o&#039;r dudalen hon. 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vector-page-tools-pinnable-header vector-pinnable-header-unpinned" data-feature-name="page-tools-pinned" data-pinnable-element-id="vector-page-tools" data-pinned-container-id="vector-page-tools-pinned-container" data-unpinned-container-id="vector-page-tools-unpinned-container" > <div class="vector-pinnable-header-label">Blwch offer</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-page-tools.pin">symud i&#039;r bar ochr</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-page-tools.unpin">cuddio</button> </div> <div id="p-cactions" class="vector-menu mw-portlet mw-portlet-cactions emptyPortlet vector-has-collapsible-items" title="Rhagor o opsiynau" > <div class="vector-menu-heading"> Gweithredoedd </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-more-view" class="selected vector-more-collapsible-item mw-list-item"><a href="/wiki/Cadwyn_fwyd"><span>Darllen</span></a></li><li id="ca-more-ve-edit" class="vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=Cadwyn_fwyd&amp;veaction=edit" title="Golygu&#039;r dudalen hon [v]" accesskey="v"><span>Golygu</span></a></li><li id="ca-more-edit" class="collapsible vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=Cadwyn_fwyd&amp;action=edit" title="Golygu cod ffynhonnell y dudalen hon [e]" accesskey="e"><span>Golygu cod</span></a></li><li id="ca-more-history" class="vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=Cadwyn_fwyd&amp;action=history"><span>Gweld hanes</span></a></li> </ul> </div> </div> <div id="p-tb" class="vector-menu mw-portlet mw-portlet-tb" > <div class="vector-menu-heading"> Cyffredinol </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="t-whatlinkshere" class="mw-list-item"><a href="/wiki/Arbennig:WhatLinksHere/Cadwyn_fwyd" title="Rhestr o bob tudalen sy&#039;n cysylltu â hon [j]" accesskey="j"><span>Beth sy'n cysylltu yma</span></a></li><li id="t-recentchangeslinked" class="mw-list-item"><a href="/wiki/Arbennig:RecentChangesLinked/Cadwyn_fwyd" rel="nofollow" title="Newidiadau diweddar i dudalennau sydd yn cysylltu â hon [k]" accesskey="k"><span>Newidiadau perthnasol</span></a></li><li id="t-specialpages" class="mw-list-item"><a href="/wiki/Arbennig:SpecialPages" title="Rhestr o&#039;r holl dudalennau arbennig [q]" accesskey="q"><span>Tudalennau arbennig</span></a></li><li id="t-permalink" class="mw-list-item"><a href="/w/index.php?title=Cadwyn_fwyd&amp;oldid=10971576" title="Dolen barhaol i&#039;r fersiwn hwn y dudalen hon"><span>Dolen barhaol</span></a></li><li id="t-info" class="mw-list-item"><a href="/w/index.php?title=Cadwyn_fwyd&amp;action=info" title="Mwy o wybodaeth am y dudalen hon"><span>Gwybodaeth am y dudalen</span></a></li><li id="t-cite" class="mw-list-item"><a href="/w/index.php?title=Arbennig:CiteThisPage&amp;page=Cadwyn_fwyd&amp;id=10971576&amp;wpFormIdentifier=titleform" title="Gwybodaeth ar sut i gyfeirio at y dudalen hon"><span>Cyfeirio at y dudalen hon</span></a></li><li id="t-urlshortener" class="mw-list-item"><a href="/w/index.php?title=Arbennig:UrlShortener&amp;url=https%3A%2F%2Fcy.wikipedia.org%2Fw%2Findex.php%3Ftitle%3DCadwyn_fwyd%26section%3D2%26veaction%3Dedit"><span>Cael URL byr</span></a></li><li id="t-urlshortener-qrcode" class="mw-list-item"><a href="/w/index.php?title=Arbennig:QrCode&amp;url=https%3A%2F%2Fcy.wikipedia.org%2Fw%2Findex.php%3Ftitle%3DCadwyn_fwyd%26section%3D2%26veaction%3Dedit"><span>Lawrlwytho cod QR</span></a></li> </ul> </div> </div> <div id="p-coll-print_export" class="vector-menu mw-portlet mw-portlet-coll-print_export" > <div class="vector-menu-heading"> Argraffu / allforio </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="coll-create_a_book" class="mw-list-item"><a href="/w/index.php?title=Arbennig:Book&amp;bookcmd=book_creator&amp;referer=Cadwyn+fwyd"><span>Llunio llyfr</span></a></li><li id="coll-download-as-rl" class="mw-list-item"><a href="/w/index.php?title=Arbennig:DownloadAsPdf&amp;page=Cadwyn_fwyd&amp;action=show-download-screen"><span>Lawrlwytho fel PDF</span></a></li><li id="t-print" class="mw-list-item"><a href="/w/index.php?title=Cadwyn_fwyd&amp;printable=yes" title="Cynhyrchwch fersiwn o&#039;r dudalen yn barod at ei hargraffu [p]" accesskey="p"><span>Fersiwn argraffu</span></a></li> </ul> </div> </div> <div id="p-wikibase-otherprojects" class="vector-menu mw-portlet mw-portlet-wikibase-otherprojects" > <div class="vector-menu-heading"> Mewn prosiectau eraill </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="wb-otherproject-link wb-otherproject-commons mw-list-item"><a href="https://commons.wikimedia.org/wiki/Category:Food_chain" hreflang="en"><span>Comin Wikimedia</span></a></li><li id="t-wikibase" class="wb-otherproject-link wb-otherproject-wikibase-dataitem mw-list-item"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q159462" title="Cysylltu i eitem ystorfa gysylltiedig [g]" accesskey="g"><span>Eitem Wicidata</span></a></li> </ul> </div> </div> </div> </div> </div> </div> </nav> </div> </div> </div> <div class="vector-column-end"> <div class="vector-sticky-pinned-container"> <nav class="vector-page-tools-landmark" aria-label="Offer tudalen"> <div id="vector-page-tools-pinned-container" class="vector-pinned-container"> </div> </nav> <nav class="vector-appearance-landmark" aria-label="Gwedd"> <div id="vector-appearance-pinned-container" class="vector-pinned-container"> <div id="vector-appearance" class="vector-appearance vector-pinnable-element"> <div class="vector-pinnable-header vector-appearance-pinnable-header vector-pinnable-header-pinned" data-feature-name="appearance-pinned" data-pinnable-element-id="vector-appearance" data-pinned-container-id="vector-appearance-pinned-container" data-unpinned-container-id="vector-appearance-unpinned-container" > <div class="vector-pinnable-header-label">Gwedd</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-appearance.pin">symud i&#039;r bar ochr</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-appearance.unpin">cuddio</button> </div> </div> </div> </nav> </div> </div> <div id="bodyContent" class="vector-body" aria-labelledby="firstHeading" data-mw-ve-target-container> <div class="vector-body-before-content"> <div class="mw-indicators"> </div> <div id="siteSub" class="noprint">Oddi ar Wicipedia</div> </div> <div id="contentSub"><div id="mw-content-subtitle"></div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="cy" dir="ltr"><table class="infobox" style="width:22em"><caption>Cadwyn fwyd</caption><tbody><tr><td colspan="2" style="text-align:center"><span class="mw-default-size" typeof="mw:Error mw:File/Frameless"><a href="/w/index.php?title=Arbennig:Upload&amp;wpDestFile=Earth-Erde.jpg,_FoodWeb.svg" class="new" title="Delwedd:Earth-Erde.jpg, FoodWeb.svg"><span class="mw-file-element mw-broken-media">Delwedd:Earth-Erde.jpg, FoodWeb.svg</span></a></span></td></tr><tr><th scope="row">Enghraifft o'r&#160;canlynol</th><td>biological interaction&#160;<span class="penicon autoconfirmed-show"><span class="mw-valign-text-top" typeof="mw:File/Frameless"><a href="https://www.wikidata.org/wiki/Q159462?uselang=cy#P31" title="Edit this on Wikidata"><img alt="Edit this on Wikidata" src="//upload.wikimedia.org/wikipedia/commons/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/10px-OOjs_UI_icon_edit-ltr-progressive.svg.png" decoding="async" width="10" height="10" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/15px-OOjs_UI_icon_edit-ltr-progressive.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/20px-OOjs_UI_icon_edit-ltr-progressive.svg.png 2x" data-file-width="20" data-file-height="20" /></a></span></span></td></tr><tr><th scope="row">Rhan&#160;o</th><td>gwe fwyd, <a href="/wiki/Ecosystem" title="Ecosystem">ecosystem</a>&#160;<span class="penicon autoconfirmed-show"><span class="mw-valign-text-top" typeof="mw:File/Frameless"><a href="https://www.wikidata.org/wiki/Q159462?uselang=cy#P361" title="Edit this on Wikidata"><img alt="Edit this on Wikidata" src="//upload.wikimedia.org/wikipedia/commons/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/10px-OOjs_UI_icon_edit-ltr-progressive.svg.png" decoding="async" width="10" height="10" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/15px-OOjs_UI_icon_edit-ltr-progressive.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/20px-OOjs_UI_icon_edit-ltr-progressive.svg.png 2x" data-file-width="20" data-file-height="20" /></a></span></span></td></tr><tr><th scope="row">Yn&#160;cynnwys</th><td>trophic level&#160;<span class="penicon autoconfirmed-show"><span class="mw-valign-text-top" typeof="mw:File/Frameless"><a href="https://www.wikidata.org/wiki/Q159462?uselang=cy#P527" title="Edit this on Wikidata"><img alt="Edit this on Wikidata" src="//upload.wikimedia.org/wikipedia/commons/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/10px-OOjs_UI_icon_edit-ltr-progressive.svg.png" decoding="async" width="10" height="10" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/15px-OOjs_UI_icon_edit-ltr-progressive.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/20px-OOjs_UI_icon_edit-ltr-progressive.svg.png 2x" data-file-width="20" data-file-height="20" /></a></span></span></td></tr><tr><td colspan="2" style="text-align:center"><span typeof="mw:File"><span title="Tudalen Comin"><img alt="Tudalen Comin" src="//upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Commons-logo.svg/12px-Commons-logo.svg.png" decoding="async" width="12" height="16" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Commons-logo.svg/18px-Commons-logo.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Commons-logo.svg/24px-Commons-logo.svg.png 2x" data-file-width="1024" data-file-height="1376" /></span></span> <a href="https://commons.wikimedia.org/wiki/Category:Food_chain" class="extiw" title="commons:Category:Food chain">Ffeiliau perthnasol ar Gomin Wicimedia</a></td></tr></tbody></table> <p>Mewn <a href="/wiki/Ecoleg" title="Ecoleg">ecoleg</a>, trefn creaduriaid sy'n dangos y ffordd trosglwyddo ynni mewn <a href="/wiki/Ecosystem" title="Ecosystem">ecosystem</a> trwy bwydo yw <b>cadwyn fwyd</b> neu <b>perthynas bwydo</b>. </p><p>Enghraifft cadwyn fwyd: <a href="/w/index.php?title=Algae&amp;action=edit&amp;redlink=1" class="new" title="Algae (dim tudalen ar gael)">algae</a> → <a href="/wiki/Protist" title="Protist">protist</a> → <a href="/wiki/Sgwid" class="mw-redirect" title="Sgwid">sgwid</a> → <a href="/wiki/Morlo" title="Morlo">morlo</a> → <a href="/wiki/Orca" class="mw-redirect" title="Orca">orca</a>. Yn yr enghraifft mae pump <a href="/w/index.php?title=Lefel_droffig&amp;action=edit&amp;redlink=1" class="new" title="Lefel droffig (dim tudalen ar gael)">lefel droffig</a> achos mae'r ynni yn llifo trwy pump organeb. Mae'r ynni yn lleihau pob amser achos dydy'r anifeiliaid ddim yn bwyta'r holl organeb, achos mae'r anifeiliaid yn defnyddio ynni i symudio ac achos mae gwastraff ynni trwy wres. </p><p>Yn lle y term "cadwyn fwyd" mae rhai pobl yn defnyddio'r term <b>gwe fwyd</b>, achos mae perthynas bwydo yn fwy gymhleth na'r syniad o'gadwyn', gyda nifer o anifeiliaid yn bwyta'r un fath o bwyd ac yr un pryd pob anifail yn bwyta mwy nag un math o fwyd. Mae hefyd yn bosib fod y cadwyn fwyd yn cylchred (gweler hefyd: y <a href="/wiki/Cylchred_carbon" title="Cylchred carbon">gylchred carbon</a> a'r <a href="/wiki/Cylchred_nitrogen" title="Cylchred nitrogen">gylchred nitrogen</a>). </p><p>Mae'n bosib fod <a href="/w/index.php?title=Llygrydd&amp;action=edit&amp;redlink=1" class="new" title="Llygrydd (dim tudalen ar gael)">llygryddion</a> yn cael eu drosglwyddo dros cadwyn fwyd a felly achosi problemau, ond er mwyn deall y cyfanswm llygryddion mewn cadwyn fwyd mae'n rhaid i ystiried y <a href="/w/index.php?title=Pyramid_biomas&amp;action=edit&amp;redlink=1" class="new" title="Pyramid biomas (dim tudalen ar gael)">pyramid biomas</a>, sy'n dangos pa mor bwyt sy wedi ei fwyta. </p> <div class="mw-heading mw-heading2"><h2 id="Trefn_cadwyn_fwyd">Trefn cadwyn fwyd</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Cadwyn_fwyd&amp;veaction=edit&amp;section=1" title="Golygu&#039;r adran: Trefn cadwyn fwyd" class="mw-editsection-visualeditor"><span>golygu</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Cadwyn_fwyd&amp;action=edit&amp;section=1" title="Edit section&#039;s source code: Trefn cadwyn fwyd"><span>golygu cod</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/Cynhyrchydd" class="mw-redirect" title="Cynhyrchydd">Cynhyrchydd</a>: <a href="/w/index.php?title=Planhigion_gwyrdd&amp;action=edit&amp;redlink=1" class="new" title="Planhigion gwyrdd (dim tudalen ar gael)">Planhigion gwyrdd</a> (mae'n cynhyrchu ynni trwy <a href="/wiki/Ffotosynthesis" title="Ffotosynthesis">ffotosynthesis</a>)</li> <li><a href="/w/index.php?title=Ysydd&amp;action=edit&amp;redlink=1" class="new" title="Ysydd (dim tudalen ar gael)">Ysydd</a>: <ul><li><a href="/wiki/Llysysydd" title="Llysysydd">Llysysyddion</a> (anifeiliaid sy'n bwyta ddim ond planhigion)</li> <li><a href="/wiki/Cigysydd" title="Cigysydd">Cigysyddion</a> (anifeiliaid sy'n bwyta ddim ond cig)</li> <li><a href="/wiki/Hollysydd" title="Hollysydd">Hollysyddion</a> (anifeiliaid sy'n bwyta planhigion a chig)</li></ul></li> <li><a href="/w/index.php?title=Dadelfennydd&amp;action=edit&amp;redlink=1" class="new" title="Dadelfennydd (dim tudalen ar gael)">Dadelfennyddion</a> (anifeiliaid sy'n bwyta planhigion ac anifeiliaid wedi marw neu tail ac yn torri nhw i lawer, e.e. <a href="/wiki/Mwydyn" class="mw-redirect" title="Mwydyn">mwydod</a> neu <a href="/wiki/Bacteria" title="Bacteria">bacteria</a>)</li></ul> <div class="mw-heading mw-heading2"><h2 id="Cynhyrchydd">Cynhyrchydd</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Cadwyn_fwyd&amp;veaction=edit&amp;section=2" title="Golygu&#039;r adran: Cynhyrchydd" class="mw-editsection-visualeditor"><span>golygu</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Cadwyn_fwyd&amp;action=edit&amp;section=2" title="Edit section&#039;s source code: Cynhyrchydd"><span>golygu cod</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Yr haul yw ffynhonnell egni pob organeb byw ar y Ddaear. Planhigion yw'r organeb sydd yn medru trosglwyddo egni golau'r haul i mewn i egni gemegol mewn glwcos. Mae hyn yn digwydd yn ystod ffotosynthesis, pan mae planhigyn yn cynhyrchu bwyd ei hun, sef glwcos, yn y dail. 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