Mars Challenge Poll
1. Is this an impact crater or a volcano?
impact crater
volcano
Is this a ridge or valley?
ridge
valley
3. Which is older, A or B?
A
B
Is this surface dusty or rocky?
dusty
rocky
Is the area in the red rectangle steeper in the N-S direction of in the E-W direction?
N-S
E-W
6. Which is wider, A or B?
A
B
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