Multiple Choice
What encouragement for life on Mars came from the Global Surveyor?
A) The ice of the south polar cap is water, not dry ice.
B) spectral evidence for chlorophyll
C) strong photographic evidence for flowing and standing water on Mars in the past
D) The face on Mars is an artificial construct.
E) Hellas has a lake of salt water in its bottom.
Correct Answer:

Verified
Correct Answer:
Verified
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