Kunzima ukucabanga ngomhlaba ongenamanzi - ubaluleke kakhulu futhi awunakubuyiselwa endaweni yawo. Imvelo yeplanethi ixhomeke ngqo kumjikelezo we-hydrological, ngamanye amagama, zonke izinqubo zokushintshaniswa kwezinto namandla zilawulwa umjikelezo wamanzi oqhubekayo. Ihwamuka ebusweni bomzimba wamanzi nomhlaba, umoya uthwala umusi uye kwenye indawo. Ngendlela yemvula, amanzi abuyela eMhlabeni, inqubo iphindaphinda kaninginingi. Izinqolobane zomhlaba zalolu ketshezi olubalulekile zithatha ngaphezu kuka-70% wendawo yonke yeplanethi, ngobuningi bugxile olwandle nasezilwandle - i-97% yenani eliphelele lamanzi asolwandle nolwandle olwandle.
Ngenxa yekhono layo eliphakeme lokuqothula izinto ezahlukahlukene ngobuningi, amanzi anokwakheka kwamakhemikhali okuhlukile cishe yonke indawo. Isibonelo, imithombo emibili esondelene nayo ingakumangaza ngezindlela zamakhemikhali eziphikisana ngokuphelele nokuqukethwe, ngenxa yomehluko ekwakhekeni kwenhlabathi lapho amanzi engena khona.
Izingxenye eziyinhloko ze-hydrosphere
Njenganoma yiluphi uhlelo olukhulu olukhona emhlabeni, i-hydrosphere inezinto eziningi ezihlanganyela kulo mjikelezo:
amanzi angaphansi komhlaba, okuhlanganiswa kwawo ngokugcwele kuvuselelwa isikhathi eside kakhulu, kuthatha amakhulu namakhulu ezigidi zeminyaka;
izinguzunga zeqhwa ezikhosele iziqongo zezintaba - lapha ukulungiswa okuphelele sekulule iminyaka eyizinkulungwane, ngaphandle kwemithombo emikhulu yamanzi amasha ezigxotsheni zeplanethi;
- izilwandle nolwandle, ngamanye amazwi, i-World Ocean - lapha kufanele kulindeleke ushintsho oluphelele lwalo lonke umthamo wamanzi njalo eminyakeni eyizinkulungwane ezintathu;
- amachibi avaliwe nolwandle olungenamapayipi - iminyaka yezinguquko ezihamba kancane ekwakhiweni kwamanzi ayo ingamakhulu eminyaka;
- imifula nemifudlana ishintsha ngokushesha okukhulu - ngemuva kwesonto kungavela izinto zamakhemikhali ezihluke ngokuphelele kuyo;
- ukunqwabelana komoya ketshezi emkhathini - umhwamuko - emini kungathola izingxenye ezihluke ngokuphelele;
- izinto eziphilayo - izitshalo, izilwane, abantu - banekhono eliyingqayizivele lokushintsha ukwakheka nokwakheka kwamanzi emizimbeni yabo kungakapheli amahora ambalwa.
Umsebenzi womnotho womuntu udale umonakalo omkhulu kakhulu ekuhanjisweni kwamanzi ku-hydrosphere yomhlaba: imifula eminingi namachibi kulinyazwa ukukhishwa kwamakhemikhali, ngenxa yalokho indawo yendawo yokuhwamuka komswakama ebusweni bayo iphazamisekile. Ngenxa yalokhu, kwehla inani lemvula nezikhathi zokuvuna ezingezinhle kwezolimo. Futhi lokhu kumane kuyisiqalo sohlu olusitshela ngobungozi bomnotho owedlulele wempucuko yabantu emhlabeni!
