Contrary to popular belief, oxygen only makes up about 21% of air. What is the most abundant chemical element in the air we breathe?
Answer Nitrogen
The air we inhale is 78.08% nitrogen, 20.95% oxygen and other small amounts of argon, carbon dioxide, neon, helium, and hydrogen.
Asked by Rachel Bortles · Last updated 5 years ago · 63.5K views · SOURCE
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