I-photosynthesis yinxalenye ebalulekileyo yomjikelo wekhabhoni.
Ukuphuhlisa ukuqonda kwamanyathelo omjikelo wekhabhoni yinxalenye ebalulekileyo yokufunda ukuba kubaluleke kangakanani ukuba abantu batshintshe uninzi lweendlela zabo eziyingozi kokusingqongileyo. Ukuze uqonde ngokupheleleyo ifuthe lokumbiwa kwemithombo yeefosili kwimeko yangoku yemo engqongileyo, kubalulekile ukuqonda ukuba yintoni umjikelo wekhabhoni kwaye usebenza njani.
Yintoni umjikelo weCarbon?
Ibinzana umjikelo wekhabhoni Isetyenziselwa ukuchaza indlela ehamba ngayo ikhabhoni kwindawo ephilayo, izinto ezingaphiliyo kunye neatmosfera. Indlela elandelwa yikhabhon xa ijikeleza emoyeni, emhlabeni, kwizityalo, kwizilwanyana nakwizibaso zeli lizwe zibuchaza ngokoqobo ubomi njengoko sibazi.
Amanqaku afanelekileyo
- Uyicutha njani iNgcaciso yeKhabhoni yakho
- Iindlela Zokuthintela Ungcoliseko Lomoya
- Imifanekiso yeZiphumo zokuFudumala kweHlabathi
Ukuqonda iNyathelo leCarbon Cycle
Umjikelo wekhabhoni ngokusisiseko yinkqubo yamanyathelo amabini ebandakanya ifotosinthesis kunye nokuphefumla. Izityalo eziluhlaza zihamba zombini i-photosynthesis kunye nokuphefumula. Iifungi kunye nobomi bezilwanyana ziyaphefumla kuphela. Ikhabhoni 'ibhayisekile' ukusuka kwizityalo eziluhlaza ukuya kwiatmosferi ize ibuyele kwisityalo.
1. Ifotosinthesisi
Ngexesha lefotosinthesisi, izityalo eziluhlaza zisebenzisa amandla amenyezelayo ukuguqula amanzi kunye nekhabhon dayoksayidi ibe ziicarbohydrate, ezizezona molekyuli zamandla aphezulu.
2. Ukuphefumla
Ngexesha lokuphefumla, izityalo ziguqula ii-carbohydrate zibuyele emanzini kunye nekhabhon diokside, zikhuphe amandla ebesetyenziselwa ukwakha ii-carbohydrate. Lawa mandla asetyenziswa sisityalo ukuhlala ebusuku.
Izilwanyana nazo ziyangena kwinkqubo yokuphefumla. Xa abantu nezilwanyana besitya izityalo, ii-carbohydrate ziguqulwa zibuyele emanzini kunye nekhabhon diokside, zombini zikhutshiwe. Amandla akhutshwa ngexesha lokuphefumla asetyenziselwa ukwenza i-Adenine Triphosphate (ATP), eyimfuneko ukuba iiseli zomntu nezilwanyana zisebenze.
Kwenzeka ntoni ngexesha lomjikelo weCarbon?
Ngelixa ifotosinthesisi kunye nokuphefumla kusisiseko somjikelo wekhabhoni, abapeyinti umfanekiso opheleleyo wayo yonke into eyenzekayo ngexesha lenkqubo. Ukuze uqonde umjikelo wekhabhoni, kubalulekile ukuba uqonde ukuba kwenzeka ntoni xa ikharbon diokside ikhutshwa kunye nendlela ezenziwa ngayo izinto zokubasa.
Ukukhutshwa kweCarbon Dioxide
Xa isityalo esiluhlaza sisifa, ii-carbohydrate zihlala zisophulwa ngumngundo okanye ziibhaktheriya, ezibolayo. I-Fungi kunye neebhaktheriya ziyaphefumla, ezivumela ukuba ziphinde zibuyele ikhabhoni emoyeni njengekhabhon diokside.
Uqeqesho lweFossil Fuel
Amafutha asefosili ayenziwa njengezityalo eziluhlaza okanye iiproteista ezinjengezityalo (izinto ezineseli enye) ezafumana ifotosinthesisi emva koko zafa. Batshona ezantsi elwandle. Abanye baba baphembeleli batyiwa ngabantu ababolayo. Ixesha elingaphezulu, ezo zingakhange zityiwe zaba yinto esiyaziyo njengamafutha asefossil. Njengamaleko ezinto ezityebileyo ze-carbohydrate aqokelelene kumgangatho wolwandle, agqunywe ngentlenga eyawela ezantsi. Ixesha elingaphezulu, uxinzelelo lweengqimba lwanceda ukuguqula ii-carbohydrate zibe yioyile kunye negesi yendalo.
Amalahle ikwangumbane we-fossil owabakho ngenxa yamanyathelo okujikeleza kwekhabhoni, enza xa izityalo zifa kumgxobhozo endaweni yolwandle. Ubume bamanzi emgxobhozo buneasidi eninzi, bushushu, kwaye neoksijini iphantsi, idala iimeko apho ukubola kungaphili khona. Kule nkqubo yezinto eziphilayo, iingqimba zezixhobo zezityalo ezingagqitywanga zakhiwa, kwaye uxinzelelo lwanyanzela iihydrocarbons ukuba ziphulukane neeathom zehydrogen. Iziphumo zokugqibela zoxinzelelo ngokuhamba kwexesha ngamalahle e-anthracite.
Kutheni umjikelo weCarbon ubalulekile?
Xa abantu betshisa i-fuel fuels, ikhabhoni eyaqala yathathwa phezulu ngumoya zizityalo ikhutshwa njengekhabhon diokside. Iiathom zekhabhoni ezintsha aziveliswanga kwaye zaziswa emoyeni. Iiathom zekhabhon ezikhoyo ehlabathini namhlanje bezikho kwasekuqaleni kwexesha. Ezi athom, eziyimfuneko ukugcina ubomi, zisekhona kuba ziye zaphinda zaphinda zaphinda zalungiswa amaxesha amaninzi ngomjikelo wekhabhoni. Ukuba umjikelo wekhabhoni awusakwazi ukusebenza ngokufanelekileyo, ubomi njengoko sibazi buza kutshintshwa kakhulu.
Impembelelo kokusiNgqongileyo
Yonke imihla, izigidi zeetoni zecarbon dioxide emoyeni yonke imihla. Ngelishwa, icarbon dioxide yirhasi yegreenhouse. Ifunxa ukukhanya kwe-infrared. Iatmosfera ke iyakwazi ukufunxa ubushushu obungaphezu kobukade ubugcina, nto leyo ekhokelela kwinto edla ngokubizwa ngokuba kukufudumala komhlaba.
