Multiple Choice
What evidence supports the hypothesis for a vast, deep ocean which once occupied what is now the northern plains of Mars?
A) many of the largest flood channels appear to have drained into the northern plains
B) geographic features that look like ancient shorelines
C) that the rock along the proposed shoreline is sedimentary rather than volcanic
D) all of these are evidence
Correct Answer:
Verified
Correct Answer:
Verified
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