Carbon dioxide

Carbon dioxide fili ne na sinadarai tare da tsarin sinadarai  . Ya ƙunshi kwayoyin halitta waɗanda kowannensu yana da zarra guda ɗaya na carbon atom wanda aka haɗa shi da atom ɗin oxygen guda biyu. Ana samun shi a cikin yanayin iskar gas a dakin da zafin jiki, kuma a matsayin tushen samar da carbon a cikin zagayowar carbon, yanayi CO shine tushen carbon na farko don rayuwa a duniya. A cikin iska, carbon dioxide yana bayyane zuwa haske mai gani amma yana ɗaukar infrared radiation, yana aiki azaman iskar gas . Carbon dioxide yana narkewa a cikin ruwa kuma ana samunsa a cikin ruwan karkashin kasa, tabkuna, kankara, da ruwan teku . Lokacin da carbon dioxide ya narke cikin ruwa, yana samar da carbonate kuma galibi bicarbonate (  ), wanda ke haifar da acidification na teku kamar yadda yanayin yanayi CO ya karu.

iskar gas ne a ciki<span typeof="mw:Entity" id="mwTQ"> </span>Yanayin duniya a 421 sassa a kowace miliyan (ppm) , ko kusan 0.04% (kamar na Mayu 2022) ya tashi daga matakan masana'antu na 280 ppm ko kusan 0.025%. Konewar kasusuwan kasusuwa shine dalilin farko na wannan karuwar CO da kuma sanadin canjin yanayi .

Matsakaicin sa a cikin yanayin duniya kafin masana'antu tun daga ƙarshen Precambrian an tsara shi ta hanyar kwayoyin halitta da abubuwan yanayin ƙasa. Tsire-tsire, algae da cyanobacteria suna amfani da makamashi daga hasken rana don haɗakar da carbohydrates daga carbon dioxide da ruwa a cikin wani tsari da ake kira photosynthesis, wanda ke samar da iskar oxygen a matsayin kayan sharar gida. Bi da bi, ana cinye iskar oxygen kuma ana fitar da CO a matsayin sharar gida ta duk kwayoyin halitta lokacin da suke daidaita mahaɗan kwayoyin halitta don samar da kuzari ta hanyar numfashi . Ana fitar da CO daga kayan halitta lokacin da suka lalace ko suka kone, kamar a gobarar daji. Tun da tsire-tsire na buƙatar CO don photosynthesis, kuma mutane da dabbobi sun dogara da tsire-tsire don abinci, CO ya zama dole don rayuwa a duniya.