AIR POLLUTION
Air is the most important element of human environment.Man cannot live a single moment without air.But we don't think that it is we who pollute this most vital element .Clean air is essential for life.Air is polluted in many ways.Smoke pollutes air.Man makes fire to cook his food,to make bricks burns refuse ,melts pitch for road construction and burns wood.All these things produce heavy smoke and this smoke pollutes air.Railway engines,power houses,mills and factories use coal and oil.Buses,trucks and cars use petrol and diesel oil.Again all these things create smoke and cause air pollution .The most serious air pollution occurs in big industrial areas where there are many mills and factories .Serious air pollution also occurs in big cities where there are many buses ,trucks and cars plying the street everyday .Sometimes men in big industrial area become so sick inhaling polluted air that they cannot be cure .So proper measures and steps should be taken to prevent air pollution.So all the people should come forward to prevent air pollution so that they can save the world and live a happy and healthy life.We should make the people aware of air pollution .They have to stop polluting environment . By doing this they can reduce air pollution.They can make a beautiful world and save the world from harm.
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