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10-11-2020
Biology

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What is the approximate percent of oxygen by volume present in Earth's lower atmosphere?

Respuesta :

beedrill39 beedrill39

10-11-2020

Answer: 21 percent

Explanation:

According to NASA, the gases in Earth's atmosphere include: Nitrogen — 78 percent. Oxygen — 21 percent. Argon — 0.93 percent.

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