From Wikipedia, the free encyclopedia
Hewa chafu ni mchanganyiko wa chembe ngumu na gesi angani.
Uzalishaji wa hewa chafu za magari, kemikali kutoka viwandani, vumbi, chavua na spora za ukungu zinaweza kusimamishwa. Ozoni, gesi, ni sehemu kubwa ya uchafuzi wa hewa katika miji.
Makala hii kuhusu "Hewa chafu" ni fupi mno. Inahitaji kupanuliwa mapema. |
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