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Suggested that all of the land masses in the world were once joined together!.
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rock layers in the mountains of italy.This is called law of superposition.
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Uniformation princeple:one body of rock cuts through another one.
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Geological mechanism to explain how the continents could drift across the Earth's surface.
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predicted that convection currents within the Earth's mantle are driven by radioactive heat that might furnish the mechanism for the continental drift theory.
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Idea that the seafloor itself moves and carries continents with it, as it expands from a central point.
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Plate tectonics combination of the continental drift theory and sealoor spreading.
