Question

the layer of the earth that is composed of rock, yet flows due to extreme heat and pressure, is known as the

○ asthenosphere
○ crust
○ outer core
○ upper mantle

Explanation:

The asthenosphere is a layer in the upper mantle of the Earth. It is composed of semi - molten rock (due to high heat and pressure). While the crust is solid rock, the outer core is liquid metal, and the upper mantle (in a broader sense, but the asthenosphere is a specific part of the upper mantle that has the described flowing - like property due to its rheological characteristics).

Answer:

asthenosphere