Question

the mentle extentds ​

Answer 1

Explanation:

Its extent has been estimated up to 400 km. This is the main source of lava that reaches the surface during volcanic eruption. The upper part of the crust and the mantle together is called the lithosphere. Its thickness is found between 10 to 200 km.

Answer 2

Explanation:

The upper mantle begins at a depth of from 5 to 50 kilometers (3−30 miles) and extends to a depth of approximately 670 kilometers (400 miles) from the surface; the lower mantle extends from a depth of about 670 kilometers (400 miles) to about 2,900 kilometers (1,740 miles).