where its free (unbound) concentration is lower
Turn off water when brushing teeth
Oxygen-poor blood goes into the lungs and through the lung capillaries after leaving the heart. It does so to be oxygenated by the lungs. The oxygen in the lungs comes from the air we breath. Once the blood is oxygenated, it goes back into the heart, to be pumped back into our bodies for distribution.
<span>Adipose tissue, also known as blubber, is the thick layer of fat/skin on a whale. </span>
