Answers2026-27 AL-Earth and Space ScienceStructure and Composition of the AtmosphereQuestion 13
13
QuizMultiple Choice

Structure and Composition of the Atmosphere

Question 13 • 2026-27 AL-Earth and Space Science

Which gas in Earth’s atmosphere helps living things make proteins?

Answer
A
oxygen
B
nitrogen
C
water vapor
D
carbon dioxide
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