Which of the following is true concerning continental crust?
a.
It does not contain radioactive elements.
b.
It mostly contains heavier and denser minerals than the mantle.
c.
It efficiently transfers heat from the mantle to the surface.
d.
None of the above

Question

Which of the following is true concerning continental crust?
a.
It does not contain radioactive elements.
b.
It mostly contains heavier and denser minerals than the mantle.
c.
It efficiently transfers heat from the mantle to the surface.
d.
None of the above

anonymous · Answer

The mantle is more dense, so it's not B.  Not A either, the crust sure does contain naturally occurring radioactive material.  Heat isn't efficiently transferred to the surface--most ground is cool, right?  

D.  None of the above.