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2
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the man who came up with the Continental Drift theory
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4
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____ currents in the mantle cause the plates to move
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5
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the type of boundary where two plates move toward each other
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6
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the type of boundary where two plates pull away from each other
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7
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the missing piece of evidence about continental drift was how the __ ____ spreads
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8
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the type of zone where the denser plate sinks under the less dense plate
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9
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the continents that made up Pangaea fit together like a _______________
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