Air pollution, our planet is enveloped by a layer of the atmosphere, about 15 km thick layer of the atmosphere consists of nitrogen, oxygen, water vapor and dust. And Micro-organisms in these gases. Gas that is most important to the existence of. Life on Earth is a layer of gas and oxygen gas atmosphere with enough oxygen. To live with a thickness of 5-6 km. This usually consists of various gases is relatively stable nitrogen 78.09% 20.94% oxygen, carbon dioxide and inert gas. 0.97% for a fixed amount of gas above, we hold that the fresh air, but whenever a component of climate change to the amount of dust and gas smell smoke, vapor, steam, soot, and the radioactivity in the atmosphere was excellent. Too many of us call such conditions as "bad air" or "air pollution" , the definition of air pollution, air pollution, climate means that there are contaminants in higher than normal levels for the time. Long enough to cause harm to humans, animals, plants or other assets may occur naturally, such as dust storms. Volcanic eruptions, earthquakes, forest fires, natural gas, air pollution occurs. By nature is very little danger to humans. The origin is far and amounts to the condition. Environment of humans and animals is minimal. Cases caused by human activities, including pollution from the exhaust. Of industrial production from agricultural activities by evaporation. Some of the gas Caused by garbage and waste and so on.
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