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trasher [3.6K]
3 years ago
8

A cyclical motion occurs because of density differences in the mantle. Heated, less dense lower regions of the fluid mantle rise

, and denser, cooler regions sink due to gravity. The combined motions serve as the engine for crustal plate movement.
A. convection currents

B. subduction

C. density circles

D. seafloor spreading
Physics
1 answer:
Marta_Voda [28]3 years ago
3 0
The answer for this is B
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