Of all elements that make up our environment air is the most important. We cannot live without air for a few minutes. Clean air is essential for our health and life. Air may be polluted in many ways. All kinds of smokes pollute air. We cook food, burn brikes and refuses and melt pitch and that produce smoke. Moreover, Railway engines and powerhouses burn oil and coal in order to produce energy and create smoke in this way. Buses, trucks, cars and baby Texas use petrol and diesel as fuel. Burning these fuels they create a smoke. Our meals and factories use coal and many chemicals that pollute air. The most serious air pollution occurs in big industrial towns and cities. By inhaling impure air we become sick. Sometimes it causes our death also. We must prevent this air pollution. By preventing air pollution we can be healthier and happier.
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