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3 years ago

11

Most of the Earth's oxygen occurs in the form of minerals in the crust and mantle. The oxygen that is available in the atmospher

e is used primarily by plants, animals, and bacteria to perform cellular respiration.
Why is running out of oxygen still not a real concern?

1 answer:

Vlad [161]3 years ago

8 0

I think it's because of other organisms produces oxygen

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