Question

5. ___________ is the hard layer of solid rock materials.

Answer 1

crust

Explanation:

The outermost layer, called the crust, is solid, too. Together, these solid parts are called the lithosphere. Earth's crust is made up of hard rocks. It is the only part of the Earth that humans see.M

Answer 2

Answer:

I think it is crust

not sure

but it can be