Riddles on Air pollution
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Answer:
(1) I am not a metal not a liquid but I am stronger then a metal or a liquid I blew in atmosphere .I am dying by vehicle smoke . who am I ?
(2) factories make me dirty but I am clear .who am I?
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0
Answer:I can fly but not stay in a place plants need me and i am not harmful who an i
Explanation:Nitrogen because place plants need me and i am not ⇒harmful
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