1.Itangiriro rusange ryicyuma gikata kubusa Ibyuma byo gukata kubuntu, nanone bivuga nkicyuma gikora kubuntu, nicyuma kivanze hiyongereyeho ikintu kimwe cyangwa byinshi byo gukata kubuntu nka sulfure, fosifore, gurş, calcium, selenium na tellurium to kunoza imitungo yacyo.Gukata ibyuma byubusa i ...
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