Je, unafahamu kuwa unga wa betri (dry carbon part) ukichanganya na 'methanol' na kisha kupilizia uturi (perfume) unaweza kupata 'black shoe polish' ?. Mwanafunzi Maria Banzi (Pichani)wa Carmel Convent Pre & Primary School alionesha kuwa inawezekana kwenye maonesho ya sayansi yaliyofanyika shuleni hapo tarehe 6/6/2015
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