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Global Warming - Essay

Global Warming

Like the glass in a greenhouse, certain gases that occur naturally in the atmosphere tend to trap the sun's heat. This natural "greenhouse effect" helps keep the Earth's average temperature at a comfortable 59° Fahrenheit. Without these greenhouse gases, the Earth would
be about 0° F, like a deep- frozen snowball.
The earth's climate is predicted to change because human's are changing the chemical composition of the atmosphere by the buildup of greenhouse gases—which mostly is carbon dioxide, methane, and nitrous oxide. These gases trap heat which is well known. But it is
uncertain about how the earth's climate responds to these gases, global temperatures are rising.
Energy from the sun ...

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gases increases.

Since the beginning of the industrial revolution, great amounts of carbon dioxide have increased nearly 30%, methane concentrations have almost doubled, and nitrous oxide concentrations have risen about 15%. These increases have made the heat-trapping worse in the earth's atmosphere. Sulfate aerosols, a common air pollutant, cool the atmosphere by reflecting light back into space, but, sulfates do not live long in the atmosphere.

Why are greenhouse gas concentrations increasing? Most scientists believe that the burning of fossil fuels and other human's doings is the main reason for the increased rate of carbon dioxide. What has changed in the last few hundred years is the constante release of carbon dioxide by human's. Energy burned to run cars and trucks, heat homes and businesses, and power factories is one of the main reasons for about 80% of todays carbon dioxide problem, about 25% of U.S. methane emissions, and about 20% of global ...

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Global Warming. (2008, May 3). Retrieved February 1, 2026, from http://www.essayworld.com/essays/Global-Warming/83034

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PAPER DETAILS

Added: 5/3/2008 02:29:02 AM
Category: Science & Nature
Type: Premium Paper
Words: 845
Pages: 4

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