General Knowledge · 1
Which element makes up approximately 78% of Earth's atmosphere by volume?
Answer
Nitrogen
Nitrogen (N₂) constitutes about 78.09% of Earth's atmosphere by volume, making it by far the most abundant atmospheric gas. Despite its abundance, most living organisms cannot use atmospheric nitrogen directly and depend on nitrogen-fixing bacteria to convert it into a usable form.
💡 Did you know?
Although nitrogen makes up nearly four-fifths of the air we breathe, our lungs cannot extract it — we inhale and exhale it entirely unused, as though it weren't there at all.
Other options people guess
- Oxygen
- Argon
- Carbon dioxide
Topics
- atmosphere
- chemistry
- earth-science
- elements
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