Why Is Mars Red

question 26

Multiple Choice

Why is Mars red?

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

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