Multiple Choice
Which of the following observations indicates that conditions on Mars may have been suitable for life in the past?
A) There are very large extinct volcanoes on Mars.
B) There is a very deep and long canyon that extends across Mars.
C) There is liquid water as well as a significant number of dried-up riverbeds on Mars.
D) Mars has polar caps made of "dry ice."
E) Mars has two small moons.
Correct Answer:
Verified
Correct Answer:
Verified
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