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Global Warming and Climate Change
註釋The earth`s atmosphere is made up of different layers. Gases such as Carbon dioxide, Methane, Nitrous oxide, chloroflurocarbons, Methyl bromide etc. make the atmosphere work like a greenhouse. These gases trap heat emitted by infrared wavelengths from the earths surface. This phenomenon is called greenhouse effect, and is responsible for the average temperature at the earth surface being 15c rather than -15 c the temperature it would be it there no atmosphere.