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Oxygen is used to help people breathe in and out

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15y ago

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What gas do you breathe in that cells need?

oxygen(O2)


What lives but doesn't breathe oxygen?

Plants breathe in a gas called carbon dioxide and then they breathe out the gas called oxygen which is what we breathe in! Also there is most likely a type of living thing which no human has ever discovered and so there may be milllions of kind of living things that may not breathe in oxygen - they might not even breathe in a gas!


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Is unburned stove gas poisonous?

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