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adreamer adreamer
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6 years ago
What evidence from the careful examination of impact craters provides evidence that Mars had surface water long ago?
A) indistinct rims of many large craters due to water erosion
B) lack of small craters which would have been erased by ancient rainfall
C) channels where water once flowed between crater lakes
D) all of these
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Life in the Universe

Life in the Universe


Edition: 4th
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19Clyde19Clyde
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6 years ago
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adreamer Author
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6 years ago
This calls for a celebration Person Raising Both Hands in Celebration
hmonier
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Yesterday
Good timing, thanks!
gma_of_7
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2 hours ago
this is exactly what I needed
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