Question

The hot and molten mass found in the lower part of the crust and upper part of the mantle is called

Answer 1

Answer:

Mantle plumes are the likely cause of “hot spots,” volcanic regions not created by plate tectonics. As a mantle plume reaches the upper mantle, it melts into a diapir. This molten material heats the asthenosphere and lithosphere, triggering volcanic eruptions.

Answer 2

Answer:

core.

Explanation:

As Core is in between the crust and the upper mantle.