Class 9 Science - Chapter Natural Resources NCERT Solutions | List any three human activities which wo

Welcome to the NCERT Solutions for Class 9th Science - Chapter Natural Resources. This page offers a step-by-step solution to the specific question from Excercise ".$ex_no." , Question 3: list any three human activities which would lead t....
Question 3

List any three human activities which would lead to an increase in the carbon dioxide content of air.

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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