Earth's crustal layer is
A)thicker under the continents than beneath the oceans.
B)is composed largely of rocks rich in aluminum and silicon.
C)less dense than the mantle material.
D)All of the above.

Question

Quizplus · Accepted Answer

The crustal layer is thicker under the continents than beneath the oceans. It is composed largely of rocks rich in aluminum and silicon. These rocks are less dense than the mantle material. Therefore, all three statements are correct and the best choice is D.

Earth's Crustal Layer Is