Question

WHAT ARE THE MAIN CONSTITUENTS OF MARS’S ATMOSPHERE?

Answer 1

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• 95% by volume of carbon dioxide (CO2)
• 2.6% molecular nitrogen (N2)
• 1.9% argon (Ar)
• 0.16% molecular oxygen (O2)
• 0.06% carbon monoxide (CO)

Answer 2

Explanation:

Carbon dioxide: 95.32 percent

Nitrogen: 2.7 percent

Argon: 1.6 percent

Oxygen: 0.13 percent

Carbon monoxide: 0.08 percent

Also, minor amounts of: water, nitrogen oxide, neon, hydrogen-deuterium-oxygen, krypton and xenon