What are the percentage of the gases that we inhale?

Question

What are the percentage of the gases that we inhale?

Answer 1

Air contains roughly 78% nitrogen, 20.95% oxygen, 0.93% argon, 0.038% carbon dioxide, trace amounts of other gases, and a variable amount (average around 1%) of water vapour.

Answer 2

The air we breathe is a mixture of gases including nitrogen, oxygen, water, argon, carbon dioxide and trace gases. Each day we inhale around 14,000 liters (14 m3) of air as we take about 26,000 breaths (that's equivalent to about 150 full bathtubs).