Ama-microorganisms ongawaboni aqala ukusebenza ngokulahlwa kwendle
Ukusebenzisa ubuchwepheshe be-microbial ukwelapha indle yasemadolobheni nesemakhaya kunokusetshenziswa kwamandla okuphansi, ukusebenza kahle okuphezulu, inani elincane le-sludge eyinsalela, elula...
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