Njengoko ukukhula kwemizi-mveliso, iikhemikhali, amayeza, ukushicilela kunye nokudaya kuqhubeka, amashishini okwenza amaphepha kunye namanye amashishini ayakhula ngokuqhubekayo. Nangona kunjalo, inani elikhulu leekhemikhali kunye nezinto ezikrwada zisetyenziswa kwinkqubo yemveliso yala mashishini, kwaye ezi zinto zinokusabela...
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