Question
Explain two ways in which human activities pollute the air. Propose one action which can help in reducing air pollution.

Answer

$(i)$ Deforestation reduces the number of trees that can abdorb carbon dioxide, increasing the concentration of greenhouse gases.
$(ii)$ Burning fossil fuels in vehicles and factories releases harmful pollutants like carbon monoxide and sulphur dioxide into the air.
Action to reduce air pollution: Promote the use of public transport and electric vehicles to decrease the number of fossil fuel-powered vehicles on the road.

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