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The separation of the continents
by plate tectonics
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We now believe that the surface of the Earth looked very different 200 million years ago from its present appearance. In particular, the continents have changed because they sit on blocks of the lithosphere that are in horizontal motion with respect to each other, and indeed they continue to change because the horizontal motion continues. The following figure illustrates.
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The separation of the continents
by plate tectonics
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