Mars once had running water that carved canyons and other features into its surface. What happened to the water?
A. Mars is too far from the sun and cold to sustain water.
B. Marsquakes caused all the water to seep into cracks in the crust.
C. An asteroid clobbered Mars and vaporized the water.
D. Most of Mars’ atmosphere and water evaporated.
Answer:A
Mars once had running water that carved canyons and other features into its surface. What happened to the water?
A. Mars is too far from the sun and cold to sustain water. B. Marsquakes caused all the water to seep into cracks in the crust. C. An asteroid clobbered Mars and vaporized the water. D. Most of Mars’ atmosphere and water evaporated.