When we breathe in, oxygen enters through the nose or mouth and travels down the windpipe (trachea) into the lungs. In the lungs, oxygen is absorbed by tiny air sacs called alveoli and then enters the bloodstream through tiny blood vessels called capillaries. The oxygen-rich blood is pumped from the lungs to the rest of the body by the heart, where it is used for energy production in cells through a process called cellular respiration.
On average, humans breathe in about 21% oxygen from the air.
We breathe in oxygen, which is in the form of O2 molecules.
Around 21% of the air you breathe is oxygen.
No, we do not breathe out oxygen. When we breathe in, we take in oxygen and when we breathe out, we release carbon dioxide. Oxygen is utilized by our bodies during cellular respiration and the byproduct, carbon dioxide, is expelled through exhalation.
Oxygen makes up about 21% of the air we breathe.
Humans breathe in oxygen and breathe out carbon dioxide. Trees "breathe" out oxygen.
The pathway of oxygen is like a tube or pipe in the breathing system.
The pathway of oxygen is like a tube or pipe in the breathing system.
You breathe in oxygen.
Yes you do. See we breathe in oxygen and we breathe out carbon dioxide. Plants are the opposite. They breathe in carbon dioxide and breathe out oxygen. We give them carbon dioxide and they give us oxygen!! That's how we breathe!!!!!!!
On average, humans breathe in about 21% oxygen from the air.
no, it is anaerobic metabolism. (without oxygen, rather than with oxygen.)
Humans breathe out carbon dioxide, the whole world runs in a motion, for example plants breathe carbon dioxide, we breathe in oxygen. Even fish breathe oxygen. They take the oxygen out of the water. So we breathe in what plants breathe out and plants breathe in what we breathe out.
when you breathe in, you breathe in oxygen and when you breathe out, its carbon dioxide
birds breathe oxygen.
We breathe in oxygen, which is in the form of O2 molecules.
We do not breathe in the water as we can't breathe dissolved oxygen.Dissolved oxygen are oxygen that are dissolved into the water.