Kunezinhlobo eziningi zokubunjwa, ezihlukaniswa ngokwesiko zibe: ① ukubunjwa kwesihlabathi okujwayelekile, okuhlanganisa isikhunta sesihlabathi esimanzi, isikhunta sesihlabathi esomile kanye nesikhunta sesihlabathi esiqinisa amakhemikhali. ② ngokwezinto zokubumba, ukubunjwa okukhethekile kungahlukaniswa ngezinhlobo ezimbili: ukukhishwa okukhethekile nge-san mineral yemvelo...
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