Usebenzisa izibonelo ezithathwe esigabeni, nikeza izingozi ezinkulu kubantu ngokushintsha kwesimo sezulu ohlwini olufushane olunezinhlamvu
Context:Imiphumela yokuguquka kwesimo sezulu ithinta abantu kuyo yonke indawo emhlabeni. Imiphumela manje ingase ibonakale kuwo wonke amazwekazi nasezifundeni zasolwandle, nezindawo ezisezingeni eliphansi, ezingathuthuki kangako ezibhekene nengozi enkulu. Ukufudumala kwembulunga yonke okuqhubekayo kunomthelela ongaba khona 'obucayi, ogcwele futhi ongenakuguqulwa' kubantu nasezinhlelweni zemvelo. Izingozi zisabalele ngokungalingani, kodwa ngokuvamile ziphakeme kubantu abahlwempu emazweni asathuthuka nasemazweni athuthukile.  I-WHO iye yahlukanisa ukuguquka kwesimo sezulu njengosongo olukhulu kakhulu empilweni yomhlaba wonke ngekhulu lama-21. Isimo sezulu esibi siholela ekulimaleni nasekufeni kwabantu, futhi ukwehluleka kwezitshalo kuholela ekungondleki kahle. Izifo ezihlukahlukene ezithathelwanayo, njengesifo sikashukela i-dengue nomalaleveva, zidluliseka kalula ezindaweni ezifudumele. Izingane ezincane yizo ezihlaselwa kakhulu ukuntuleka kokudla. Bobabili abantwana nabantu abadala basengozini yokushiswa kakhulu. I-World Health Organization (WHO) iye yalinganisela ukuthi phakathi kuka-2030 no-2050, ukuguquka kwesimo sezulu kuzobangela ukufa kwabantu abengeziwe abangaba ngu-250 000 ngonyaka. Bahlola izinga lokufa kwabantu asebekhulile ngenxa yokushisa, ukwanda kwezifo zohudo, umalaleveva, i-dengue, izikhukhula ezisogwini, nokungondleki kahle kwezingane. Kulindeleke ukuba kube nokufa kwabantu abadala abangaphezu kuka-500 000 unyaka ngamunye ngo-2050 ngenxa yokwehla kokutholakala kokudla nekhwalithi yako. Ngo-2100, amaphesenti angu-50 kuya kwangu-75 omphakathi womhlaba wonke angase abhekane nezimo zezulu ezisongela ukuphila ngenxa yemiphumela ehlangene yokushisa okukhulu nomswakama.  Ukuguquka kwesimo sezulu kuthinta ukulondeka kokudla. Kuye kwabangela ukuncipha komkhiqizo wommbila, ukolweni nobhontshisi wesoya emhlabeni wonke phakathi kuka-1981 no-2010. Ukufudumala kwembulunga yonke esikhathini esizayo kunganciphisa ngokwengeziwe isivuno semikhiqizo eyinhloko. Cishe ukukhiqizwa kwezitshalo kuyoba nomthelela omubi emazweni asezingeni eliphansi, kuyilapho imiphumela ezindaweni ezisenyakatho ingase ibe nemiphumela emihle noma emibi. Abantu abengeziwe abangaba yizigidi ezingu-183 emhlabeni wonke, ikakhulukazi labo abanemali encane, basengozini yokubulawa indlala ngenxa yalemithelela. Ukuguquka kwesimo sezulu nakho kunomthelela ezinhlotsheni zezinhlanzi. Emhlabeni wonke, kuyoba nezinhlanzi ezimbalwa ezingatholakala. Izifunda ezincike emanzini eqhwa, izifunda esezomile kakade, neziqhingi ezincane zinengozi enkulu yokucindezeleka kwamanzi ngenxa yokushintsha kwesimo sezulu.  Umonakalo wezomnotho obangelwa ukuguquka kwesimo sezulu ungaba mkhulu futhi kunethuba lokuba nemiphumela eyinhlekelele. Cishe ukuguquka kwesimo sezulu sekuye kwandisa ukungalingani kwezomnotho emhlabeni wonke, futhi kulindeleke ukuba lo mkhuba uqhubeke. Imiphumela emibi kakhulu ilindeleke e-Afrika eseningizimu yeSahara, lapho iningi lezakhamuzi zendawo lincike emithonjeni yemvelo nezolimo naseNingizimu-mpumalanga ye-Asia. I-World Bank ilinganisela ukuthi ukuguquka kwesimo sezulu kungenza abantu abangaphezu kwezigidi ezingu-120 babe mpofu ngo-2030.  Ukungalingani kwamanje okusekelwe engcebweni nasezikhundleni zomphakathi kuye kwaba kubi nakakhulu ngenxa yokushintsha kwesimo sezulu. Ubunzima obukhulu ekunciphiseni, ekuzivumelaniseni, nasekululameni ekuphazamisekeni kwesimo sezulu bubhekene nabantu abahlukanisiwe abanokulawula okuncane phezu kwemithombo. Abantu bomdabu, abaphila ngomhlaba nangemvelo yabo, bazobhekana nobungozi empilweni yabo nasendleleni yabo yokuphila ngenxa yokushintsha kwesimo sezulu. Ukuhlolwa kochwepheshe kwaphetha ngokuthi indima yokuguquka kwesimo sezulu ezingxabanweni ezihlomile incane uma iqhathaniswa nezici ezinjengokungalingani kwezenhlalo nezomnotho kanye namakhono ombuso.  Iziqhingi ezisezansi nemiphakathi esogwini zisengozini ngenxa yokwenyuka kwamazinga olwandle, okwenza kube nezikhukhula eziningi. Ngezinye izikhathi, umhlaba ulahlekelwa ulwandle phakade. Lokhu kungase kuholele ekutheni abantu basemazweni aseziqhingini, njengaseMaldives naseTuvalu, bangabi nawo amazwe. Kwezinye izindawo, ukwanda kwamazinga okushisa nomswakama kungase kube kukhulu kakhulu ukuba abantu bakwazi ukuzivumelanisa nakho. Uma isimo sezulu sishintsha kakhulu, amamodeli abikezela ukuthi cishe ingxenye eyodwa kwezintathu yesintu ingase iphile ezindaweni ezishisa kakhulu nezingahlaleki, ezifana nesimo sezulu samanje esiseSahara. Lezi zici zingase ziholele ekufudukeni kwemvelo, ngaphakathi nakwamanye amazwe. Kulindeleke ukuba abantu abaningi badingiswe ezindaweni zabo ngenxa yokwenyuka kwamazinga olwandle, isimo sezulu esibi kanye nezingxabano ezibangelwa ukuncintisana okwandayo ngemithombo yemvelo. Ukuguquka kwesimo sezulu kungakhuphula nokungavikeleki, okuholela "ekuboshweni kwabantu" abangakwazi ukuhamba ngenxa yokuntuleka kwemithombo.
- Usongo olukhulu empilweni yomhlaba wonke ngenxa yesimo sezulu esibi, ukuntuleka kwezitshalo, nokwanda kwezifo ezithathelwanayo (ezidluliseka kalula uma isimo sezulu sifudumele)  - Imiphumela ekuvikelekeni kokudla ngenxa yokwehliswa kwesivuno sezitshalo nomthelela enanini lezinhlanzi  - Ukulimala kwezomnotho ngenxa yezenzakalo zezulu ezimbi kanye nokudideka kwemithombo yemvelo nezolimo  - Ukwanda kwengcebo nokungalingani kwezenhlalo nezomnotho njengoba ukuguquka kwesimo sezulu kunomthelela kubantu abalahliwe abaxhomeke emhlabathini nasezinhlelweni zemvelo ezihambisana nakho