Why did Earth’s interior differentiate into the core and mantle?

Match the layers of the atmosphere, labeled A through D, with their appropriate names. 

Grasses evolved before seed-bearing plants (gymnosperms).

The Westerlies flow from east to west.

Granite is coarse-grained and is primarily composed of felsic minerals. 

Winds are deflected to the _______ in the Southern Hemisphere due to the Coriolis effect. Select the best answer.

Which of the following Earth processes are considered internal processes? Select all that apply

Mid-ocean ridges form when two sections of oceanic lithosphere diverge.

All of the elements up to iron formed during the Big Bang. 

The FTC requires how many written Disclosures?