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GS Geography Physical Geography of World
Q.

The inner-most layer of the earth is known as:
Explanation:

ANS. (C) 
The inner core is the innermost physical layer of the Earth. The asthenosphere is the highly viscous, mechanically weak and docilely-deforming region of the upper mantle of the Earth. It lies below the lithosphere, at depths between 100 and 200 km below the surface, but perhaps extending as deep as 700 km.

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