Oxygen: A colorless, odorless reactive gas. The chemical element of atomic number 8 and the life-supporting component of the air. It makes up 20% of the earth's atmosphere.
Air: The invisible gaseous substance surrounding the earth. A mixture of mainly nitrogen and oxygen,
Oxygen is in the air.
No, there is 21% oxygen in air.
in our air is there mostly oxygen
When photosynthiesis occures...it releases oxygen into the air
Dyr air is about 21% oxygen.
There is oxygen,air,and carbon dioxide
Uh...sorry to break it to you, but oxygen is air.
About 21% of inspired air is oxygen.
Room air is about 21% oxygen.
Approximately 21% of the air we breath is oxygen.
Roughly about 21% of air is oxygen.
Air is approximately 20% Oxygen.