Wednesday, August 13, 2008

Ideation of Assignment 2







The climate of our planet varies depending on internal or natural processes, volcanic eruptions or changes in the Earth’s orbit. The growth in the Earth’s temperature over the last 50 years was the results of several underlying causes, both natural and man-made. Greenhouse gases are those gases that contribute to the greenhouse effect. This causes are either caused by nature or by several human activities, such as the burning of fossil fuels.
Greenhouse gases are released both by nature and human activities. In the wild, methane, a greenhouse gas, is released from arctic tundra and wetlands. The Earth is also bound to undergo a cycle of climate change, that usually lasts about 40,000 years.

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