The author refers to a "conveyor belt " in line 16 in order toA.illustrate the effects of
The author refers to a "conveyor belt " in line 16 in order to
A.illustrate the effects of convection in the mantle.
B.show how temperature differences depend on the positions of the continents.
C.demonstrate the linear nature of the Mid-Atlantic Ridge.
D.describe the complicated motions made possible by back-coupling.
E.account for the rising currents under certain mid-ocean ridges.