Multiple Choice
Why do scientists believe there was once liquid water on Mars?
A) Depositional landforms are seen on Mars,but not erosional landforms.
B) Landforms such as river channels and sandbars are seen on Mars.
C) Large depressions are seen on Mars that were once large lakes.
D) Evidence of marine life has been found in the rocks on Mars.
Correct Answer:

Verified
Correct Answer:
Verified
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