Match the following.

1. crustsemi-solid layer of the earth lying between the top layer and the upper mantle.

2. asthenosphere metallic layer at the earth's center

3. permafrost the earth's outermost layer

4. mantlethick, hot layer of semi-solid rock surrounding the earth's core

5. corepermanently frozen soil beneath the surface in polar and near-polar areas

The correct answer, the right match is number 4

Explanation:

1. it is wrong, because that is the definition of asthenosphere.

2. It is wrong, because that is the definition of core.

3. It is wrong, because that is the definition of crust.

4. It is the correct answer. The right match: mantlethick, hot layer of semi-solid rock surrounding the earth's core.

5. It is wrong, because that is the definition of permafrost.