Continents in collision
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Presents evidence supporting Alfred Wegener's theory of continental drift. Explains plate tectonics and discusses what is known of the earth's crust and upper mantle.
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Presents evidence supporting Alfred Wegener's theory of continental drift. Explains plate tectonics and discusses what is known of the earth's crust and upper mantle.
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"Presents evidence supporting Alfred Wegener's theory of continental drift. Explains plate tectonics and discusses what is known of the earth's crust and upper mantle."
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