In terms of area, the extinct Martian volcano Olympus Mons is about the size of (a) Mt. Everest; (b) Colorado; (c) North America; (d) Earth's Moon

In terms of area, the extinct Martian volcano Olympus Mons is about the size of

(a) Mt. Everest; (b) Colorado; (c) North America; (d) Earth's Moon

1 Answer

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