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History, 28.01.2020 03:31 josephaciaful

What evidence supports the idea that water once flowed on the surface of mars?

a. canyons and sedimentary deposits
b. inactive volcanoes and impact craters
c. permafrost and rocks containing iron oxides
d. irregularly shaped moons and inactive volcanoes

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What evidence supports the idea that water once flowed on the surface of mars?

a. canyo...

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