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Essay 4 - Ashley McIntire English 217 4685 Essay 4 Human...

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Ashley McIntire English 217 4685 January 28, 2006 Essay # 4 Human Impact on Climate and Atmosphere With the mental and physical capabilities humans have, we have come a long way technologically speaking. Just for transportation, we came from domesticating animals to creating enormous sport utility vehicles that burn up a gallon of gas for every eight miles driven. Some would say humans are a very advanced species. Environmentalists, however, might argue that through all of the inventions and creations there is a complete lack of concern for the environment. Humans affect the atmosphere and climate by polluting the environment with gases and toxins from the numerous developments of the industrialized world. The pollution humans have created, swell to the extremes of smog, acid rain, global warming, and ozone layer depletion. In major cities, smog is a common thing to experience. It is pollution in the air that is a combination of smoke and fog. It is a brownish-yellow or greyish-white haze of gases and small paricles. Photochemical smog, the most common form, is the mixture of sunlight, nitric oxides, and volatile organic compounds (VOC’s). Nitric Oxides and VOC’s are emissions brought on mainly by humans. Fossil-fuel burning engines in vehicles and coal powerplants are the most common sources of nictric oxides.
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