What is true of Mars?
A) Its atmosphere is mostly water vapor.
B) Iron oxide on the surface is responsible for its reddish color.
C) Its magnetic field is stronger than Earth's.
D) A pool of water was discovered by the Mars Rover.
E) Definite microfossils have been found.

Question

Quizplus · Accepted Answer

Iron oxide, or rust, on the surface of Mars gives the planet its distinctive reddish color, which is why it's often referred to as the "Red Planet."

What Is True of Mars