Question

Which of these is NOT observational evidence supporting the past presence of liquid water on the surface of Mars?

a) There is evidence that suggests that there may have once been water on Mars, but no water rem
b) There is evidence that suggests that liquid water may have existed on Mars, and the presence of
c) There is no water, nor any evidence of water, on Mars.
d) Liquid water has been discovered on the surface of Mars.

Answer 1

The evidence supporting the past presence of liquid water on Mars includes recurring slope lineae, ancient lakes and glaciers, and remote-sensing data analyzed by Mars rovers and orbiting spacecraft.

Step-by-step explanation:

The answer is d) Liquid water has been discovered on the surface of Mars.

The other options are observational evidence supporting the past presence of liquid water on the surface of Mars. There is evidence that suggests that there may have once been water on Mars, but no water remains today. There is also evidence that suggests that liquid water may have existed on Mars in the past, such as the dark streaks known as recurring slope lineae and the presence of ancient lakes and glaciers. Additionally, there is abundant evidence for a past history of liquid water on Mars, confirmed by the remote-sensing data and rock formations analyzed by the Mars rovers and orbiting spacecraft.