Isifinyezo Ukwanda kwezimboni kanye nenani labantu emashumini eminyaka ambalwa edlule kube nomthelela omkhulu ekuwohlokeni kwekhwalithi yamanzi. Amanye amagesi avela ezitshalweni zokwelashwa kwamanzi anobuthi futhi ayasha, okudingeka ahlonzwe, njenge-hydrogen sulfide, i-carbon dioxide, i-methane, kanye ne-ca...
Funda kabanzi