Each statement below represents a feature that has been claimed to exist on Mars. Sort the statements into the correct bin according to whether each is a feature that actually exists, that does not actually exist, or that might exist but about which we cannot yet draw a definitive conclusion.
Real Mars/Imaginary Mars/Unknown Mars
1. Minerals of types known to form in liquid water
2. surface pools of liquid warer
3. microscopic life
4. abundant water ice
5. dried-up river beds
6. a network of straight-line canals
7. cities built by an ancient civilization
8. underground pockets of liquid
9. frequent rainfall and snowfall

1, 4, 5 are true. 2, 6, 7, 9 are not true. 3 and 8 are not known.

Explanation:

According to the information we have gathered from the vehicles sent to Mars and the data they collected and analyzed, "Minerals of types known to form in liquid water" on Mars. There is "abundant water ice" and also "dried-up river beds".These statements actually exist.

"Surface pools of liquid water" does not exist on Mars. "A network of straight-line canals", "cities built by an ancient civilization" and "frequent rainfall and snowfall" also do not exist on Mars according to the data.

We do not have any information to prove the existense of "underground pockets of liquid" and "microscopic life" but they are possibilities.

I hope this answer helps.