What is your breathing air made up of?

Air is a mixture of gasses that are safe and healthy for life.It contains by molar composition,78% nitrogen,21% oxygen,0.003% carbon dioxide and 1% accounts for the minute quantity of water vapour,rare gases and dust particles.Humans and animals breathe in oxygen which plants gives off.And breathes out carbon dioxide which plants takes in,by this process the air is contineously recycling and beign purified.
The air you breath is made of roughly (by volume) 78.08% nitrogen, 20.95% oxygen, 0.93% argon, 0.038% carbon dioxide, trace amounts of other gases and may contain a variable amount of water vapor, on average around 1%.