Abstract: iikepusi ezimdaka ezinithiweyo kufuneka zicocwe, zicebisa ngokubanzi ukuba ukuhlamba izandla, kwizikhongozelo zeplastiki ukulayishwa kungantywiliselwa ikepusi ubungakanani bamanzi, kwaye ugalele isixa esifanelekileyo sesicoci esithambileyo, emva koko uthungelwe ikepusi kuyo kangangesiqingatha seyure, susa ukuhlamba ngamanzi abandayo. amanzi, emva koko ukhuphe amanzi, uya...
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