men
100%. All of the oxygen that I breathe comes from the air! The answer that you were probably after, but did not ask, was about the percentage of oxygen in the air that we breathe. The questions may sound similar but they are not the same. The answer is a little over 20%.
The common term for what we breathe in is air.
The Lower Explosive Limit (LEL) of natural gas (which is primarily methane). is 5% by volume in air. The Upper Explosive Limit (UEL) is 15% by volume in air
Oxygen
because we breathe in the oxygen which is flowing around this earth and when we breathe in this oxygen around us ,we also breathe in air pollution which is not good for all things living on this planet.
78.09% Nitrogen by Volume (approx)
Nitrogen is the gas that makes up the largest percentage of the Earth's atmosphere, composing about 78% of the air we breathe.
The gas you breathe in from the air is called oxygen.
Argon is the gas that makes up the smallest percentage of Earth's atmosphere, composing only about 0.93% of the air we breathe.
Around 21% of the air you breathe is oxygen.
Oxygen is approximately 21% of the air we breathe.
Gas
Spiders breathe in oxygen like humans do. They have small breathing holes called spiracles located on the underside of their abdomen that allow them to take in oxygen from the air.
It is a gas.
21%
Approximately 78% of the air we breathe is nitrogen. Nitrogen makes up the largest percentage of our atmosphere compared to any other gas.
21%