Multiple Choice
Why are there no small craters on the surface of Venus?
A) The thick atmosphere protects the surface from small meteorites.
B) Old surfaces have been subducted by convection currents.
C) Venus formed after the heavy bombardment period.
D) Weathering and erosion removed all craters.
E) Shield volcanoes prevent small craters to remain on exist on the surface.
Correct Answer:

Verified
Correct Answer:
Verified
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Q30: What are the three periods of Mars's
Q31: Shield volcanoes, like those on Venus and
Q32: The atmosphere of Venus is very dry.
Q33: The surface rocks on Venus are similar
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Q36: How have scientists mapped the surface features
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Q38: Mars has _ but it is hidden.
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