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In the atmosphere up to an altitude of about 80 km, oxygen (O2) makes up about __________ % and nitrogen (N2) comprises about _________% of the gases by volume:

In the atmosphere up to an altitude of about 80 km, oxygen (O2) makes up about __________ % and nitrogen (N2) comprises about _________% of the gases by volume:
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In the atmosphere up to an altitude of about 80 km, oxygen (O2) makes up about __________ % and nitrogen (N2) comprises about _________% of the gases by volume:

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User Lukas Novak
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1 Answer

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Answer: Oxygen makes up about 21% and nitrogen makes up 78%

Step-by-step explanation:

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User Konart
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