The source of the water found in the form of ice near Mercury's north and south poles is
A) comet impacts.
B) unknown at the present time.
C) rainfall early in Mercury's history, when the planet had a dense atmosphere.
D) a former global ocean, now almost entirely evaporated and lost to space.
Correct Answer:
Verified
Q70: Where has water ice been found on
Q71: Mercury's atmosphere consists mostly of
A) sulfur dioxide
Q72: Recent radar observations of Mercury have suggested
Q73: The highest daytime temperature reached on the
Q74: Temperatures on the surface of Mercury are
Q76: Mercury's atmosphere is
A) almost nonexistent.
B) relatively dense,
Q77: What do most astronomers believe is the
Q78: When Mariner 10 passed by Mercury, the
Q79: The highest temperature on Mercury is 700
Q80: How was water ice discovered near Mercury's
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