The water that formed many of the erosion features seen on Mars appears to have originated
A) from clouds in the atmosphere
B) from volcanic outgassing
C) comet impacts
D) from beneath the surface of the planet

Question

Quizplus · Accepted Answer

Evidence from Mars rovers and orbiters suggests that much of the water that formed erosion features on Mars came from underground aquifers or reservoirs. Underground water may have been released during volcanic activity or impacts, but it ultimately originated from the planet's deeper crustal layers. Clouds in Mars' thin atmosphere do not provide enough water for the kind of erosion features observed, and comets are not believed to have played a significant role in Mars' geologic history.

The Water That Formed Many of the Erosion Features Seen