chanzo cha oxygen

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  1. JamiiForums Tanzania Nashindwa kuelewa chanzo cha hewa au oxygen ni kipi

    Kwa mujibu wa sayansi, hewa au oxygen inatokana na mimea, lakini kiuhalisia tunaona hewa au upepo mwingi unakuja kutokea baharini na baharini hakuna mimea. Pia maeneo ya majangwani hakuna mimea ila kuna upepo mkali, je hewa huzalishwa kwa njia gani katika maeneo hayo? Naomba mnieleweshe kwa...
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