Global warming is an increase in the average temperature of the earth's atmosphere as a result of the greenhouse effect. The greenhouse effect is a warming mechanism that helps maintain a constant temperature on the planet through the use of greenhouse gases. The greenhouse gases allow light from the sun to pass through them to the earth (sunlight has short wavelengths); however, as the earth releases long-waved heat, the gases absorb nearly 90% of it, essentially trapping it. When the molecules absorb heat, they go into an excited unstable state. To stabilize, they release the energy and most return as heat back to earth. As a result, the greenhouse effect helps the earth maintain a regular temperature; the gases raise the earth's temperature by nearly 30°. The greenhouse gases consist of carbon dioxide, water vapor, carbon dioxide, methane, dinitrogen monoxide, and chlorofluorocarbons. Although each of these substances occur naturally, increasing the amount of greenhouse......

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Title: Global Warming
Approximate Word Count: 836
Approximate Pages: 4 (250 words per double-spaced page)

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