Question

to fine out the approximate percentage of oxygen in air
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Answer 1

❥A᭄ɴsᴡᴇʀ࿐

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.

Explanation:

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Answer 2

Explanation:

The air is made up of about 21 percent oxygen.

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