The Spirit and Opportunity rovers found evidence of ____ in Mars' past.
A) planetary rings
B) an impact with Earth
C) life
D) liquid water
Correct Answer:
Verified
Q23: Why has Earth remained geologically active compared
Q24: The tens of thousands of small orbiting
Q25: The Moon formed _.
A) before Earth formed
B)
Q26: _ is the most active volcanic body
Q27: The surface of Jupiter consists mainly of
Q29: _ have a mass ratio of rock
Q30: Over 97% of Venus' atmosphere is composed
Q31: A meteor that does not completely vaporize
Q32: Asteroids may change their orbits frequently and
Q33: The tectonic activity on Venus has been
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