Umaleko weozone, osikhusela kwimitha yelanga, uyaqhubeka nokuba buthathaka. Nangona umngxunya ongaphezulu kweAntarctica uvala, kweyona ndawo inabantu abaninzi kwiplanethi kwenzeka okwahlukileyo: uxinzelelo lweozone luyancipha.
Nangona kungacaci ukuba kutheni le nto isenzeka, iingcali zithi umntu onoxanduva ngumntu, okanye ngokuchanekileyo, ungcoliseko oluphuma emoyeni.
I-ozone yirhasi enamandla kakhulu, engaphezulu, enokubangela ukusweleka ngaphambi kwexesha kwinani elikhulu labantu, kodwa kwezona ndawo ziphakamileyo zomoya, kumgama omalunga neekhilomitha ezili-15 ukuya kwezingama-50, lelona khaka likhuselekileyo ingasinika uMhlaba. Apho iimolekyuli zeozone, ezenziwe ziiathom zeoksijini ezintathu, Bamba ukuya kuthi ga kwi-99% yemitha ye-ultraviolet kwaye phantse yonke imitha ye-infrared. Ukuba bekungekho kolu luhlu, ngekhe kubekho bomi njengoko imitha ibingatshisa ulusu kunye nezityalo ngokoqobo.
Ukwazi oku, akumangalisi ukuba ukusukela ngo-1985, unyaka apho umngxunya kolu luhlu wafunyanwa khona e-Antarctica, Zonke iinkokheli zehlabathi ziyavuma ukuvala i-chlorofluorocarbons (CFC). Ii-CFCs, ezikhoyo kwiiarosols nakwimimoya yomoya, phakathi kwezinye, ziyenza buthathaka iozone. Nangona kunjalo ukuthintelwa kunciphisile ukusetyenziswa kwayo, isilele ukwenza umaleko womelele.
Ngokophando, olwalusekwe kwimilinganiselo evela kwiisathelayithi, iibhaluni zemozulu kunye neemodeli zekhemikhali zemozulu, Uxinzelelo lwe-ozone embindini kunye nasezantsi kumgangatho we stratosphere uye wehla ngokuthe chu. Ngapha koko, kuye kwakho ukwehla kweeyunithi ezingama-2,6 zeDobson. Ukongeza, kumaleko asezantsi esimo sezulu uxinzelelo lonyukile, ingxaki enkulu kuba, njengoko besesitshilo, i-ozone engaphezulu iyabulala ebomini.
Ngolwazi oluthe kratya, yenza cofa apha.