What do most astronomers believe is the source of the minute amount of oxygen in Mercury's atmosphere?
A) sublimation of water molecules from ice at the poles
B) ions captured from the solar wind
C) decay of sulfur dioxide ejected from volcanic eruptions
D) bacterial activity in a permafrost layer below the surface
Correct Answer:
Verified
Q72: Recent radar observations of Mercury have suggested
Q73: The highest daytime temperature reached on the
Q74: Temperatures on the surface of Mercury are
Q75: The source of the water found in
Q76: Mercury's atmosphere is
A) almost nonexistent.
B) relatively dense,
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
Q81: An observer is on the surface of
Q82: The lower atmosphere of Venus near the
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