Multiple Choice
On either side of a mid-ocean ridge,oceanic lithosphere slowly _________
A) rises because it becomes thicker away from the ridge.
B) rises because it becomes buoyant.
C) sinks into the asthenosphere because it cools and thickens,increasing in density.
D) sinks into the asthenosphere because convection pulls it downward.
Correct Answer:

Verified
Correct Answer:
Verified
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