Oxygen
Oxygen is taken in by cellular respiration.
The blood carries oxygen to all the cells of the body.
The gas in the atmosphere important to respiration is oxygen. It is taken in by animals during breathing and used in cellular respiration to produce energy for their cells.
Oxygen! Remember it isn't the only gas. CO2 is also removed from cells in the body.
carbon dioxide
In gas cans.
Carbon dioxide is the atmospheric gas expelled by body cells. It is produced during cellular respiration and is then exhaled out of the body through the lungs.
a waste gas createdby cells. Used by plants to survive
Oxygen (O2)
carbon dioxide
carbon dioxide
Oxygen diffuses into cells. Carbon dioxide diffuses out.