Question

Which factor contributes to the convection currents in the mantle being sustained?

A) rising of dense material, sinking of less dense material
B) cooling of material near the core, heating of material near the crust
C) sinking of cooler material from the crust, rising of heated material from near the core
D) maintenance of a stable temperature in the center of a convection current

Answer 1

D

Step-by-step explanation:

because conventional current have high pressure and low pressure that are balanced