What is the approximate concentration of argon in Earth's atmosphere?

Forestry Environment MCQs for PPSC, FPSC, NTS, and Pakistan government job tests. Select an option below, then read the explanation.

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Published
22 May 2024
Last updated
28 May 2026

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Explanation

Argon makes up roughly 0.90% of the Earth's atmosphere by volume, which is significantly higher than trace gases like neon or helium but less than nitrogen or oxygen.

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