Every cell in our body needs oxygen to function.
2018-09-07
Every cell in our body needs oxygen to function. Without oxygen, life cannot exist.We get oxygen by breathing air,The lungs extract oxygen from the air we breathe and mix it with the blood. The heart then pumps the oxygenated blood to all parts of the body.Our brain uses 20{e94a9193ef36f921b9b544c077e72bc4a8fe147a0ed6c0df8cfe6f150d693bfd} ofContinue Reading
