Njengomkhiqizi wembewu kanye noMkhiqizi weGrader, yabelana nawe.Umshini wokuhlanza okusanhlamvu usetshenziselwa ukususa amaqabunga, amakhoba, uthuli, nokusanhlamvu okuncibilikisiwe kokusanhlamvu.Izinga layo lokususa ukungcola okuphilayo lifinyelela ku-90% futhi izinga lokususa ukungcola kwe-inorganic lifinyelela ku-92%.Inezinzuzo zokuvela okuhle...
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