The ______________ is a soft layer of the upper mantle.
A) lithosphere
B) asthenosphere
C) geosphere
D) mesosphere

Question

Quizplus · Accepted Answer

The asthenosphere is a soft layer of the upper mantle that is located just beneath the lithosphere. The lithosphere is the rigid outer layer of the Earth, while the geosphere includes all the layers of the Earth, and the mesosphere is the layer of the mantle beneath the asthenosphere that is more rigid.

The ______________ Is a Soft Layer of the Upper Mantle