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GS Geography Physical Geography of World
Q.

The sphere of living matter together with water, air and soil on the surface of the earth is known as:
Explanation:

ANS. (B) 
Part of the Earth’s surface and atmosphere that contains the entire terrestrial ecosystem, and extends from ocean depths to about six kilometres above sea level. Not precisely remarkable, it contains all living organisms and what supports them soil, subsurface water, bodies of water, air and includes hydrosphere and lithosphere.

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