What element is most abundant in earth's crust

The prevailing climatic type in the southeastern part of the usa, western europe, southern brazil and northen argentina is the mid-latitude or: a)humid temperate b)humid cold c)semiarid moderate dry d)summer savanna.

Acanyon on the ocean floor at which the crust bends downward is called a(n)

Explain why ocean water levels do not change very much, even though precipitation happens so often.