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Home Q & A Board Science-Related Homework Help Physics Astronomy
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adreamer adreamer
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7 years ago
The number of impact craters on the slopes of Tharsis volcanoes suggests that they have been inactive
A) since Mars formed 4.6 billion years ago
B) for at least a billion years
C) for at least tens of millions of years
D) only for the last few hundred years
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Life in the Universe

Life in the Universe


Edition: 4th
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DonskoyDonskoy
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7 years ago
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adreamer Author
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7 years ago
Smart ... Thanks!
shangshang
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Yesterday
I appreciate what you did here, answered it right Smiling Face with Open Mouth
karamsidhu1
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2 hours ago
This helped my grade so much Perfect
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