Kuti uve nemafungiro pamusoro pemaitiro ekudzivirira mvura, zvinodikanwa kusvika pakuziva zvakakosha zvinhu zvinoumba chivakwa. Chivako chakajairika chinogadzirwa nekongiri, zvidhinha, matombo, uye dhaka. Aya marudzi ezvigadzirwa anoumbwa nemakristasi ecarbonate, silicate, aluminates, uye oxides ...
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