Answer:
Every body needs oxygen. In fact, every tissue and every cell in the body needs a constant supply of oxygen to work properly.
Step-by-step explanation:
Oxygen gets into our cells and tissues via the lungs. The lungs breathe in oxygen from the air, then pass the oxygen into the bloodstream through millions of tiny air sacs called alveoli. Hemoglobin in the red blood cells then picks up the oxygen and carries it off to the body's tissues and cells.