Oxygen
trees release oxygen that we use to breathe. the trees take in carbon wich is what we breathe out.
Oxygen it helps the trees breathe too.
a tiger breathe in oxygen and breathe out carbon dioxide
carbondioxide
oxygen
Dr. Ron The fungi breathe they breathe the gas Co2 they are just like trees. They take our waste and use it for good purposes
carbon doixide
Oxygen.
Carbon dioxide
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!
Humans release carbon dioxide when they breathe out. This gas is a byproduct of the process of cellular respiration and is removed from the body through exhalation.