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Running water played a major role in shaping Mars in ancient times.
Q1: Which body has the densest atmosphere?<br>A) Earth<br>B)
Q10: The Phoenix lander on Mars failed to
Q11: Density is defined as<br>A) weight divided by
Q17: The lakes on Titan have not been
Q31: Which type of telescope has the simplest
Q78: All the terrestrial planets lie inside the
Q89: Essentially, the Great Red Spot is<br>A) composed
Q95: The primary source of the Sun's energy
Q100: Most asteroid orbits lie between those of
Q113: The major product of the fusion of