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2 votes
Mars was once similar to earth in that

A.) it had only one moon
B.) liquid water flowed on its surface
C.) it showed evidence of plate tectonics
D.) its atmosphere had a thin layer of carbon dioxide

User Vartec
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1 Answer

3 votes

Answer:

the anwser is b

Step-by-step explanation:

scientists have discovered evidence of water

User Matt Timmermans
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