Mars may have been more Earth-like in the past because
A) its atmosphere was thicker and warmer
B) it was rotating more rapidly
C) the Sun was dimmer, putting out less solar radiation
D) it was not as close to the Sun
Correct Answer:
Verified
Q21: Although very unlikely, if life exists on
Q22: Most of the carbon dioxide on Venus
A)
Q23: Which of the following is not property
Q24: If life exists on Mars today, it
Q25: Some Jovian moons may have liquid water
A)
Q27: Venus may have been more Earth-like in
Q28: What would probably be the most likely
Q29: Most of the carbon dioxide on the
Q30: Europa may have a subsurface ocean of
Q31: Mercury and the Moon do not have
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