Deep Trenches in the Ocean Mark Places Where

Deep trenches in the ocean mark places where

A) plates slip sideways relative to one another.
B) plates pull apart, leaving great rifts in the crust.
C) one plate slides under another, returning older crust to the mantle.
D) hot mantle material rises upward and spreads sideways, pushing the plates apart.
E) plates push together, creating ocean mountain chains.