Each of the following supports the belief that large amounts of liquid water once existed on Mars EXCEPT one. Which is the exception?
A)Evaporites have been found on the surface.
B)There is a deficiency of neutrons (produced in collisions of cosmic rays with rocks below the surface) escaping from the surface.
C)Mud slides seem to follow some meteoric impacts.
D)Scientists have found few carbonate rocks on Mars.

Question

Quizplus · Accepted Answer

The presence of carbonate rocks indicates that there was once a significant amount of liquid water on Mars, as these rocks form in water-rich environments. The other choices all support the belief that large amounts of liquid water once existed on Mars: evaporites suggest the presence of dried-up bodies of water, a deficiency of neutrons can be caused by the presence of hydrogen (which is a key component of water), and mudslides following meteoric impacts suggest the presence of wet, unstable soil.

Each of the Following Supports the Belief That Large Amounts