The layers of the earth are described by the composition but not their mechanical properties?

The layers of the earth are described by the composition but not their mechanical properties?

This is FALSE.

The layers of Earth are described by both. The Earth has different compositional and mechanical layers. The compositional layers are determined by their components, while mechanical layers are determined by their physical properties.

i'm pretty sure it's spores

it's not c. i took the quiz and got it wrong. so my best guess is b.

have a great day, and hope this .