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Global Warming

Global warming refers to an increase in the average temperature of the earth’s surface This occurs when greenhouse gases trap sun’s heat and light in the earth’s atmosphere, which increases the temperature. They warm the world
•Greenhouse gases are:
Carbon Dioxide (CO2),
Water Vapor (clouds),
Nitrous Oxide (N2O) and
Methane (CH4),

The gases allow sunlight in, which warms the earth. This heat bounces off the earth as infrared radiation. Greenhouse gases such as water vapor (clouds) and carbon dioxide (CO2) trap and retain the heat.The greenhouse effect is necessary to make life possible on earth.

Causes of Global Warming

Scientists have two views:
a) Global Warming is due to earth’s natural cycle of warming and cooling.
b) Global Warming is the result of human activities.

Historical evidence demonstrates that since industrialization humans are dramatically contributing to the......

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Approximate Word Count: 933
Approximate Pages: 4 (250 words per double-spaced page)

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