Although "breatharians" claim that they can live without eating by just breathing fresh air, there is no nutrition value to air.
it is water and air for the nutrients
The small intestine
In the small intestine
21%
air is made of 19.98 percent oxygen 79 percent nitrogen and 2 percent carbon
20 Percent.
About 21% of air is oxygen.
Protien
Because air contains many nutrients such as O2, Nitrogen, and Carbon Dioxide, our body takes the air in, compresses it, and uses the nutrients to fuel our bodies. After, the used air, called methane, is sent to the intestines, where it is either farted or saved for further air use. The reason why we breathe out is to release excess nutrients from the air. Vitamins also come from air; for example, Vitamin A stands for Vitamin "Air"
Plants use the decaying remains of animals for nutrients. Animals use plants for nutrients and air. Plants also need air in order to survive. Air uses plants to be produced. -CO
For animals - from their food. For plants - from the soil and air.
At least 35 percent