Mbere, hamwe n’ikirere gikomeje guhuha mu bice byinshi by’igihugu, “PM2.5” ryahindutse ijambo rishyushye cyane mu bumenyi bukunzwe.Impamvu nyamukuru yo "guturika" agaciro ka PM2.5 muriki gihe ni imyuka myinshi ya dioxyde de sulfure, okiside ya azote n'umukungugu biterwa no gutwika amakara.Nka kimwe mu ...
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