 Shan sanno oo dood iyo falaqeyn dheer ah ka dib, waxa la soo saaray heshiiskii la odhan jiray Montreal Protocol kaas oo ku saabsanaa in la yareeyo qiiqa hawada lagu sii-deynayo Emission reduction sida chlorofluorocarbonsCFS, suntani waxa ay dhaawacaysaa lakabka hawada ee falaadhahah khatarta ee ah ee cadceeda ka qabta dhulka. 