Izinsizakusebenza zomhlaba ovuselelekayo yilezo zinzuzo zemvelo ezingabuyiselwa ngenxa yezinqubo ezahlukahlukene. Abantu kumele balawule imisebenzi yabo, ngaphandle kwalokho ukunikezwa kwalezi zinsiza kungancishiswa kakhulu, futhi kwesinye isikhathi kudingeka amakhulu eminyaka ukubabuyisela. Izinsizakusebenza ezingavuselelwa zifaka:
- izilwane;
- izitshalo;
- ezinye izinhlobo zezinsizakusebenza zamaminerali;
- umoya-mpilo;
- amanzi amasha.
Ngokuvamile, imithombo evuselelekayo ingabuyiselwa esikhundleni sokusetshenziswa. Kumele kuqashelwe ukuthi leli gama lingaqondakali, futhi lisetshenziswa njengesichasiso sezinsizakusebenza "ezingavuseleleki". Ngokuqondene nempahla evuselelekayo, ingxenye ebaluleke kakhulu yazo izophela ngokuzayo, uma izinga lokuxhashazwa kwabo lingehlisiwe.
Ukusetshenziswa kwamanzi ahlanzekile nomoya-mpilo
Ngonyaka owodwa noma eminingana, izinzuzo ezinjengamanzi ahlanzekile ne-oxygen ziyakwazi ukubuyisa. Ngakho-ke imithombo yamanzi efanele ukusetshenziswa kwabantu iqukethe izindikimba zamanzi ezwekazini. Lokhu ngokuyinhloko kuyimithombo yamanzi angaphansi komhlaba namachibi amanzi angenasawoti, kepha kuneminye imifula amanzi ayo angasetshenziselwa ukuphuza. Lezi zinsiza ziyizinqolobane ezibaluleke ngokwamasu kubo bonke abantu. Ukuntuleka kwabo kwezinye izifunda zeplanethi kuholela ekusweleni kwamanzi okuphuza, ukukhathala nokufa kwabantu, kanti amanzi angcolile adala izifo eziningi, ezinye zazo ezibulalayo.
Kuze kube manje, ukusetshenziswa komoya-mpilo akuyona inkinga yomhlaba wonke; kwanele ngokwanele emoyeni. Le ngxenye yomkhathi ikhishwa izitshalo, ezikukhiqiza ngesikhathi se-photosynthesis. Njengoba ososayensi babala, abantu basebenzisa kuphela i-10% yenani eliphelele lomoya-mpilo, kepha ukuze bangaludingi, kuyadingeka ukumisa ukuqothulwa kwamahlathi futhi kwandise inani lezikhala eziluhlaza emhlabeni, ezizonikeza inani elanele lomoya-mpilo enzalweni yethu.
Izinsiza eziphilayo
Izimbali nezilwane ziyakwazi ukululama, kepha isici se-anthropogenic siyithinta kabi le nqubo. Ngenxa yabantu, cishe izinhlobo ezintathu zezitshalo nezilwane ziyanyamalala emhlabeni njalo ngehora, okuholela ekuqothulweni kwezinhlobo ezingandile nezisengozini yokuqothulwa. Ngenxa yabantu, abamele abaningi bezitshalo nezilwane balahlekile unomphela. Abantu basebenzisa izihlahla nezinye izitshalo ngamandla kakhulu, hhayi ezasekhaya kuphela, kepha nezidingo zezolimo nezimboni, futhi izilwane azibulawelwa ukudla kuphela. Zonke lezi zinqubo zidinga ukulawulwa, ngoba kunengozi yokucekelwa phansi kwengxenye ebalulekile yezitshalo nezilwane.
