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Biology 13 Online
OpenStudy (anonymous):

The driving mechanism for plate tectonics is _____________________. A. the moon's tidal pull B. convection of the upper mantle C. convection of earth's core D. magnetic reversals

OpenStudy (anonymous):

I'll give you a clue for this problem, even though it should really be in the Geology section. Think about which bit of the Earth interacts with the crust ie the tectonic plates themselves.

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