Question

what is the theory of plate tectonics​

Answer 1

Answer:

Plate tectonics is the theory that the outer rigid layer of the earth (the lithosphere) is divided into a couple of dozen "plates" that move around across the earth's surface relative to each other.

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Answer 2

The theory is that the outer layer of the earth (the lithosphere)is divided into a couple of dozen ''plates" that moves aroud the earth surface