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Beginning of Paper
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Global Warming
Global Warming, aside from pollution is one of scientists biggest
concerns. Global Warming is caused by the Greenhouse effect. There are 4
steps in the Greenhouse effect. 1-Sunlight radiates from the sun, through
space, to EarthÆs atmosphere. 2- The sunlight enters the atmosphere and
hits Earth. Some of it turns into heat energy in the form of infrared
light. The heat gets absorbed b ....
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Middle of Paper
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.... have already changed the chemical make up of the
atmosphere. Between the pre-industrial times and today, we have seen the
concentration of carbon dioxide rise 30% in some regions, in particular
the northern hemisphere, human practices have increased concentrations of
aerosols in atmosphere, which is a traditional form of air pollution),
which tends to cool the atmosphere.
With all these gases in the air, it is starting to change the EarthÆs
climate. The temperature of the EarthÆs surface ....
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