1) Which disease is caused by air pollution a) Asthma  b) Gasas 2) The factor that cause air pollution a) Smoke from vehicles b) Loud c) Burning of plastic 3) The harmful substances polluting the environment a) Reactants b) Pollutants c) Oxygen d) Carbon dioxide 4) The gradua increase in the temperature a) Global warming b) Global cooling 5) What we have to do reduce air pollution? a) We must save electricity b) Burn crackers c) Do not use bicycle 6) What is global warming ? a) Decrease in the earth temperature b) Increase in th earth temperature

our environment

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