Which gas makes up the largest share of Earth’s atmosphere?
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✅ Correct answer: B. Nitrogen
Nitrogen is about 78 percent of the atmosphere; oxygen is about 21 percent.
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Tap an option to check your answer.
✅ Correct answer: B. Nitrogen
Nitrogen is about 78 percent of the atmosphere; oxygen is about 21 percent.
10 random questions, instant feedback, earn XP.