CO2 molecule

CO2 is a chemical that we interact with daily as it is what we breathe out as we are inhaling oxygen. Furthermore it is what plants "inhale" to breathe out oxygen that we can breathe, and so if we did not exhale CO2 the plants would not be able to turn it into oxygen so we could breathe. So ending note if the plants did not breathe out CO2 as oxygen we would be unable to breathe.

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