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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 Earth's 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 ....
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Middle of Paper
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These human practices 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 Earth's climate. Th ....
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