Monday, December 28, 2009

What is the Atmosphere Made Of ?

The Atmosphere is the air which surrounds the planet Earth. The gases in the air allow plants,
animals and humans to live. The dampness ad movement of the air near the Earth causes our
weather. The atmosphere also shields us from the Sun's harmful rays and from fallingmeteorites.

Air is made up of many gases. The most common are nitrogen(78%) and oxygen (21%).

There are small amounts of other gases, including argon, water vapor and carbon dioxide.

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