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AnonymFeb 2, 2013

what is greenhouse effect?

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    Feb 2, 2013

    The greenhouse gases in the lower levels of the atmosphere, like glass are transparent to the near infra-red rays of shorter wavelength but are opaque to the heat radiated by the heated earth (longer wavelength heat ray) and trap them. By not letting the solar rays to escape into the outer space, greenhouse gases add to the heat that is already present on the earth surface. This results in increase in temperature and is commonly known as Greenhouse effect. The major sources of greenhouse gases are: carbon dioxide, methane, chlorofluorocarbons, nitrous oxide etc.

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