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Question

Q. Consider the following statements:

Which layer of earth is described above?

A
Lithosphere
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B
Asthenosphere
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C
Mesosphere
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D
Barysphere
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Solution

The correct option is B Asthenosphere
Explanation:

Asthenosphere:
  • The asthenosphere is the layer of earth located in the upper portion of the mantle, beneath the lithosphere.
  • It is considered to be extending up to 400 km. It is the main source of magma that finds its way to the surface during volcanic eruptions.
  • The characteristics of the asthenosphere are that it is composed of semi-fused and solid materials. The asthenosphere is responsible for the renewal and expansion of the ocean floor.

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