<span>The mantle is more dense, so it can not B.
Not even A , because the crust sure does contain naturally occurring radioactive material. Heat is also not efficiently transferred to the surface--most ground is cool,
so correct option is none is above that is D
hope it helps</span>
Answer:
My answer would also be as yours
Explanation:
at the bottom of the ocean
Answer: I believe the answer is stroke
Explanation: