Question

1. choose the best answer.

what is the name of the plastic - like upper layer of the mantle that is more solid than liquid?
mesosphere
lithosphere
troposphere
asthenosphere

Explanation:

The asthenosphere is a plastic - like upper layer of the mantle. The lithosphere is rigid, the troposphere is part of the atmosphere, and the mesosphere is a layer in the Earth's interior but not the plastic - like upper mantle layer described.

Answer:

asthenosphere