CUIZ-FACT-126E87B4
easy
Environment
✓ Fact-Verified
Which gas is the primary component of Earth's atmosphere?
Verified Answer
Oxygen
Quiz Options
- Oxygen
- Nitrogen
- Carbon Dioxide
- Argon
Explanation & Context
Nitrogen makes up about 78% of the Earth's atmosphere, followed by oxygen at about 21%.
Also Asked As / Semantic Queries
"What gas is the primary component of Earth's atmosphere?"
Authoritative Sources & Citations
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