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

Texas has an impending storm, and california is experiencing a water crisis. match the technologies with the state that can use them to reduce the effects eddies natural hazards. texas is the storm cellar and the wood that is crisscrossed. california is the dam and the storage tanks

What percentage of light hits earth's surface directly?

Several billion years ago which gas was the least prevailant in the atmosphere