Question

what is the percentage of oxygen in atmosphere​

Answer 1

Answer:

ID: 875 857 4654

Pa: 12345

z..m pls

Answer 2

Answer:

$\huge \mathcal \colorbox{pink}{ANSWER}$

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$\tt \blue{21 \: \: percent}$

It's a mixture of different gases. The air in Earth's atmosphere is made up of approximately 78 percent nitrogen and 21 percent oxygen. Air also has small amounts of lots of other gases, too, such as carbon dioxide, neon, and hydrogen.