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Air Pollution

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Environmental Sciences
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  ERUM NAZ1605B.S ENGLISH5   TH   SEMESTER   CAUSES OF AIR POLLUTION 1.Burning of Fossil Fuels: Sulfur dioxide emitted from the combustion of fossil fuels like coal, petroleum and other factory combustibles is one the major cause of air pollution. Carbon Monoxide caused by improper or incomplete combustion and generally emitted from vehicles is another major pollutant along with Nitrogen Oxides, that is produced from both natural and man made processes .  2. Household and Farming Chemicals: When we use these chemicals at home or offices with no or little ventilation, we may fall ill if we breathe them. Crop dusting, fumigating homes, household cleaning products or painting supplies, over the counter insect/pest killers, fertilizer dust emit harmful chemicals into the air and cause pollution.  3. Exhaust from factories and industries : Manufacturing industries release large amount of carbon monoxide, hydrocarbons, organic compounds, and chemicals into the air thereby depleting the quality of air.Petroleum refineries also release hydrocarbons and various other chemicals that pollute the air and also cause land pollution . Ammonia is a very common by product from agriculture related activities and is one of the most hazardous gases in the atmosphere. Excessive use of insectides,pesticides and fertilizers emit harmful chemicals into the air causing air and water pollution 4 .  Automobile Emissions: Automobile emissions are the number one source of carbon monoxide, lead, nitrogen oxides, and volatile organic compounds released into the atmosphere. While the emissions of any single vehicle are usually quite low, when you add up the millions of vehicles in transit in any given urban metropolitan area, you come up with quite a lot of emissions .
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