Question

Which gas constitutes the major portion of the atmosphere?​

Answer 1

Answer:

The three major constituents of Earth's atmosphere are nitrogen, oxygen, and argon. Water vapor accounts for roughly 0.25% of the atmosphere by mass

Explanation:

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Answer 2

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$\bigstar$Which gas constitutes the major portion of the atmosphere?

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The three major constituents of Earth's atmosphere are nitrogen, oxygen, and argon. Water vapor accounts for roughly 0.25% of the atmosphere by mass.