Question

why is mars red? a lava flows from volcanic activity causing the surface of mars to look red. b the soil on mars contains iron oxides (rust), which change its color. c dust storms create sand clouds in the atmosphere that block the surface of mars, showing only red soil. d the atmosphere on mars filters its color so that it appears red from earth.

Explanation:

The red color of Mars is due to iron - oxides (rust) in its soil. These iron - containing compounds give the planet its characteristic red hue. Volcanic lava flows are not the main cause of the red color. Dust storms do not create the red color but can make the red soil more visible. The atmosphere of Mars does not filter its color to make it appear red; the redness comes from the surface material.

Answer:

B. The soil on Mars contains iron oxides (rust), which change its color.