<prompt> Fingqa isihloko: CNN Akusona neze isenzakalo esisha ukusho ukuthi ukungcola komoya kuyingozi empilweni yabantu. Nokho, okungase kusimangaze nakakhulu ukufunda ukuthi ukungcola komoya kuyingozi empilweni yengane engakazalwa, ngaphambi kokuba amaphaphu ayo athathe umoya okokuqala ngqá. Ucwaningo olwandayo lubonisa ukuthi izinhlobo ezihlukahlukene zokungcola komoya zinomthelela obonakalayo empilweni yezingane, kokubili lapho zisesesibelethweni nangemva kokuzalwa. Sicabanga ukuthi usana luvikelekile ngaphakathi komzimba kanina, kodwa izinto ezingcolisayo zingase zifinyelele usana ngendlela efanayo nezakhi nemithi. Umthofu, i-mercury nezinhlayiya ezincane ziphakathi kwezinhlobo zokungcola komoya esaziyo ukuthi zingathinta impilo yezingane ngaphambi nangemva kokuzalwa. I - ozone, noma i - smog, ingenye yezinto ezingase zengezwe ohlwini lwezinto ezingcolisa umoya ezaziwa ngokuthi ziyingozi empilweni yombungu. Eminyakeni eminingana edlule, ucwaningo oluningi luye lwabonisa ukuhlobana okungenzeka phakathi kwamazinga aphakeme okuchayeka kwe-ozone yomama nemiphumela engemihle yezempilo ezinganeni, kuhlanganise nezinguquko ekwakhekeni kwamaphaphu nasekusebenzeni kwawo, isisindo esiphansi sokuzalwa kanye nokungajwayelekile kwe-neuro-behavioral. Kulindeleke ukuba eziningi zalezi zinkinga zempilo zibe nemiphumela ehlala isikhathi eside. Lena imiphumela ekhathaza kakhulu edinga ukucwaningwa okwengeziwe ukuze iqondwe ngokugcwele. Lolu cwaningo lunezela ebufakazini obuningi obubonisa imiphumela emibi ye-ozone kubantu babo bonke ubudala. Kulinganiselwa ukuthi ngo - 2007 kwafa abantu abangu - 15 000 ngaphambi kwesikhathi ngenxa ye - ozone phakathi kwabantu babo bonke ubudala. I-ozone ibuye ibangele ukuphefumula kanzima, ukuphefumula kanzima nokukhwehlela, ukuhlaselwa yisifuba somoya, ingozi eyengeziwe yokungenwa izifo zokuphefumula kanye nesidingo esandayo sabantu abanezifo zamaphaphu - njengabantwana abane-asthma - sokuthola ukwelashwa noma sokulaliswa esibhedlela. Owesifazane okhulelwe angazivikela kanjani yena nengane yakhe ekhulayo ekulimaleni okubangelwa i-ozone? Kakade, i-ozone ngokuvamile ayibonakali ngaphandle kwezimo ezithile, njenge-smog futhi izinga layo eliphakeme alibonakali kumuntu ovamile. Ukuxwayisa ngezinga lomoya ehlobo kungase kusize kwezinye izimo, kodwa abanye abesifazane abakhulelwe abakwazi ukugwema ukuchayeka. Ngaphakathi...  <response>: I-EPA ihlongoze izindinganiso eziqinile ze-ozone. Imithetho emisha elwa nokungcola izokwenza amazinga e-ozone ahambisane nalokho isayensi esitshela khona. 