How did seafloor spreading suggest a driving force for continental drift?
A) Youngest seafloor is found near continents.
B) Seafloor spreading pushes continents.
C) Mantle convection causes irreversible slippage.
D) Subduction creates the youngest seafloor.
Correct Answer:
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A)alternating
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Q84: The Earth's magnetic field
A)never appreciably changes.
B)has reversed
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