Multiple Choice
As hot mantle rock rises,it expands.As it expands it cools.This cooler rock is
A) less dense so it keeps rising to form underwater volcanoes.
B) more dense so it sinks.This contributes to the heat flow convection process.
C) ocean crust.
D) unstable and explodes in a volcano.
Correct Answer:

Verified
Correct Answer:
Verified
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