SELECT * FROM question_mgmt as q WHERE id=4281 AND status=1 SELECT id,question_no,question,chapter FROM question_mgmt as q WHERE courseId=8 AND subId=16 AND chapterId=194 and ex_no='1' AND status=1 ORDER BY CAST(question_no AS UNSIGNED) CBSE Free NCERT Solution of 9th science Natural Resources list any three human activities that you think wou

Question:

List any three human activities that you think would lead to air pollution.

Answer:

The following three human activities would lead to air pollution:

(i) Burning of fossil fuels like coal and petroleum.

(ii) Emission of harmful gases and dust particles from vehicles .

(iii) Smoke released from industries containing harmful gases like sulphur dioxide, oxides of nitrogen.


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  • Answered by Ekta Mehta
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