Izinzwa ze-calcium ion ziyithuluzi elisebenzayo lokuqapha izinga lamanzi, elibonakala ngokutholwa kwesikhathi sangempela, ukuzwela okuphezulu, nokusabela okusheshayo. Asetshenziswa kakhulu emanzini okuphuza, amanzi angcolile ezimbonini, kanye nokuqapha izinga lamanzi emvelo. EMexico, lapho imithombo yamanzi iyindlala...
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