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GS Geography Physical Geography of World
Q.

The majority of Earth’s crust is composed of which rock?
Explanation:

ANS. (A) 
The Earth is composed predominantly of a large mass of igneous rock with a very thin veneer of weathered material—namely, sedimentary rock. Igneous rocks are formed from the solidification of magma, which is a hot molten or partially molten rock. Igneous and metamorphic rocks make up 90– 95% of the top 16 km of the Earth’s crust by volume.

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