stop air pollutionby | 23-10-2013 19:33 |
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 One or more chemical in high enough concentration in the air to harm human ,other animal vegetation,or material .Excess heat or noise can also be considered forms of air pollution .Such chemical or physical condition are called air pollution.Source of air pollution is industries, vechicle ,chimenyburn of plastic etc.They release very harmful gases.They effect our body and cause many disease. |
