NO FAKE ANSWERS AND NO LINKS. How much oxygen does the atmosphere contain?

Jmend asked Nov 5, 2023

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Jmend asked Nov 5, 2023

by Jmend

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9 votes

Answer:

21%

Step-by-step explanation:

To remember this percentage, use the amount of land and water on earth, like this: 3 (land) x 7 (water) = 21

(note: oxygen does not change depending on land or water amount)

Farmerchris answered Nov 11, 2023

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