As we inhale air, oxygen enters the respiratory system and the circulatory system to transport it to the other parts of the body and to all cells. As the oxygen is already transported, the blood becomes deoxygenated and carries a CO2 which returns to the lungs and then we exhale the carbon dioxide.
I think its either, the suns not out, or the temperature decreases
Answer:
Water
Explanation:
water molecule contains one oxygen covalently bound to two hydrogen atoms with no carbon present.
Answer:
To produce white blood cells
Explanation: is NOT a function of the liver.