Atmosphere :
The multi-layered gaseous envelope surrounding the planet earth is atmosphere. The atmosphere is a significant component of the natural environment. All the necessary gasses (oxygen, nitrogen, hydrogen, carbon-dioxide, and water vapour), sources for the sustenance of all the life forms in the biosphere are components of atmosphere. The atmosphere filters the incoming ultra-violet (UV) radiation and protects the earth’s surface from abnormal features such as cancer / mutation in organisms.
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