Izindaba Umphakathi, Imvelo
Ihlathi imithombo zomhlaba - izipho bemvelo esintwini
izitshalo zomhlaba zingahlukaniswa izigaba ezimbili ezibanzi: flora zasendle umusa. Okwamanje, kunezinhlobo zezinhlanzi ayizinkulungwane eziyisithupha kufanele ugxile izinhlobo ezivamile. Sekukonke kukhona 15-20 izitshalo ezifana, ezifana irayisi, ukolweni, ummbila, usoya nezinye. Ihlathi izinsiza zezwe ukumela ingxenye enkulu ye izitshalo zasendle isigaba Earth. Njengezinye izinhlobo eziningi izimpahla zemvelo, kuba imithombo exhaustible ukuthi usengakwazi zibuyiswe. Lolu hlobo kuhle kwemithombo yemvelo isetshenziselwe izinjongo eziningi ezahlukene, futhi enze zonke izinhlobo imisebenzi.
Ihlathi imithombo zomhlaba ngokwesiko libhekene izinkomba ezintathu eziyinhloko, kuhlanganise umhlaba ihlathi, ubukhulu nendawo yamathe onyawo, kanye amasheya emi ugodo. Nokho, naphezu kweqiniso lokuthi minyaka kukhona nokwanda ngayinye izinkomba, kubalulekile ukuba uqaphele ezinye izinkinga.
Ihlathi umnotho umhlaba kusukela ezikhathini zasendulo yasetshenziswa for ukwakhiwa kanye nokuvuselelwa kwezindlu, kokubili abantu basendulo nabanamuhla. Okwamanje, cishe ingxenye ugodo kuvuna uya inhloso ngenhla echazwe. Kulokhu, intuthuko kwezobuchwepheshe akusho inciphe nokuncenga ukwakheka zemvelo. Abaklami futhi abaklami emhlabeni wonke baye basebenzisa ngempumelelo izinto ezifanayo imiklamo yabo. Nokho, naphezu izinyathelo obehlukene nokugcina izinsizakalo zemvelo, ukusetshenziswa kuningi kunokomuntu supply, futhi lokhu kuholela ekuphelelweni yokuthi izinsiza ihlathi zomhlaba ziyancipha kancane kancane.
Ngaphezu kwalokho, kusukela ezikhathini zasendulo, kukhona ukuthuthukiswa esebenzayo wezolimo. Ngebanga lalokho, lokhu kubangelwa ukuqothulwa kwamahlathi planethi. Kulinganiselwa ukuthi unyaka ngamunye endaweni ihlathi kuyehla mayelana 0.5 amaphesenti. Lokhu kusho ukuthi ngisho ukukhula ekhona ikhava ihlathi nezinye izinto ezichazwe ngenhla ngeke uzisibekele bonke izidingo zesintu.
Futhi kwaba ehlathini, kanye namaxhaphozi, kuba "amaphaphu" planethi. Lokhu kusho ukuthi bazi ukuthi banesibophezelo ukuze kuphelele umoya-mpilo emkhathini. Kufanele kuqashelwe ukuthi ukunciphisa kwamahlathi futhi kuholela ekubhujisweni futhi ukuguguleka kwenhlabathi ikhava, okuyinto elilulaza ezolimo.
Ihlathi imithombo yezwe. Uhlu ukusatshalaliswa endaweni ihlathi
| esifundeni | Area, mln. Ha |
| emhlabeni | 4170 |
| Europe | 200 |
| I-Asia | 530 |
| i-Nyakatfo Melika | 850 |
| i-Ningizimu Melika | 850 |
| Afrika | 740 |
| Australia nase-Oceania | 200 |
Ngokuhlaziya leli thebula, kungaba kuqashelwe ukuthi ihlathi izinsiza emhlabeni akha izifunda ezimbili eziyinhloko, ngokuthi esishintshashintshayo: nasenyakatho naseningizimu. Ngesikhathi izinqolobane efanayo ugodo kwasakazeka ngokulinganayo. South Belt Itholakala sezulu esishisayo bhé, kuyilapho enyakatho ihlanganisa esipholile nakwezifudumele sezulu zone.
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