Why is Mars red?
a. Dust storms on the planet have blasted the planet so fiercely that the rocks have reddened.
b. Mercuric oxide is abundant and has a red tint.
c. The iron in the surface rocks have been oxidized over time.
d. The ancient volcanoes poured out vast plains of molten sulfur, much as on Io, which has now solidified and preserved the reddish color.
e. Sulfuric acid rain etched a reddish color into iron-rich surface rocks.

A - Dust storms on the planet have blasted the planet so fiercely that the rocks have reddened

The iron in the surface rocks have been oxidized over time.

Explanation: Mars in astronomy is the fourth planet in the solar system and the second smallest after mercury. Mars is often referred to as the red planet this is due to the effect of the iron oxide prevalent on Mars' surface, which gives it a reddish appearance distinctive among the astronomical bodies visible to the naked eye.

Mars is a terrestrial planet that consists of minerals containing silicon and oxygen, metals, and other elements that typically make up rock.

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