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Why do scientists think the Grand Canyon was once covered by an ocean? (1 point)
A Seawater has been found sleeping up through the canyon floor.
B The sedimentary rock type forming layers of the canyon formed under the sea
C Only an ocean would have the strength to erode the rock forming the Grand Canyon
D The Grand Canyon is located along coastlines that likely flooded
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Why do scientists think the Grand Canyon was once covered by an ocean? (1 point)
A Seawater has be...
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