oooo?!!?!? You breathe it!!! If there wasn't any oxygen we would all die.
oooo?!!?!? You breathe it!!! If there wasn't any oxygen we would all die.
Aquatic animals still breathe oxygen, even if in water. If there's little oxygen dissolved in the water, they will suffocate.
because air contains many gases like nitrogen, oxygen carbon dioxide and a few other gases like argon etc.
Oxygen is an element - it contains no other constituent gases.
Gases displace oxygen, and heavy gasses will sit under oxygen containing air, hence if you are in a confined space it is necessary to know about the potential lack of air supply to breathe, aswell as the potential of combustion and the like.
oxygen
Hydrogen and Nitrogen. Or oxygen and carbon dioxide, or carbon monoxide.
The gases that are exchanged are oxygen and carbon dioxide.
Hydrogen and Oxygen are gases at 20OC.
The release of gases associated with combustion tend to rise because they are hotter than ambient.
oxygen
Oxygen