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Atmosphere
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Layers of the Earth's atmosphere.
Credits - NASA
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The atmosphere is the air surrounding the Earth, consisting of a series
of shells or layers with different characteristics. The atmosphere,
composed mainly of nitrogen and oxygen with traces of carbon dioxide,
water vapor, and other gases, acts as a buffer between the Earth and the
sun. The layers, troposphere, stratosphere, mesosphere, thermosphere,
and the exosphere, vary around the globe and in response to seasonal
changes.
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