Multiple Choice
The Mars rover Curiosity has recently found evidence that there was liquid water on the planet's surface at some point in its history.Because we have not found any liquid water on the planet today,what does this imply about Mars?
A) The planet was once covered entirely in liquid water.
B) A drought must have removed all the water from the surface.
C) The climate was once warm enough that the polar ice caps melted.
D) The interior of Mars must be made entirely of liquid water.
Correct Answer:
Verified
Correct Answer:
Verified
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