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Earth's atmosphere


 

Earth's atmosphere is the layer of gases surrounding the planet Earth and retained by the Earth's gravity. It contains roughly 78% nitrogen and 21% oxygen, with trace amounts of other gases. The atmosphere protects life on Earth by absorbing ultraviolet solar radiation and reducing temperature extremes between day and night.

See also

~ Table of Content ~

Introduction
Temperature and the atmospheric layers
Pressure
Composition
Density and mass
The evolution of the Earth's atmosphere
References
See also
External links

 

 

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