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6 Cards in this Set
- Front
- Back
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continental drift
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Alfred Wegener's hypothesis
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Pangaea
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all lands, the original, signal, continent,
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Panthalassa
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all seas, the original signal body of water.
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Mid-Atlantic Ridge
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an undersea mountain range with a steep, narrow valley running down its center.
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mid-ocean ridge
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a long system of ridges that run all the way around the earth.
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seafloor spreading
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the moving of the oceanic crust.
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