The human body is one of the most complex and in depth mammals to walk this planet. The human body is so well thought out and made, it is almost as if it was a planned, in depth process in the making. When the first human being walked this earth there were no lapses or mistakes. Every organ, every detail and function, the human body is close to robot like. The body knows how to adapt to each and every alteration it might face. It develops different systems and works around the clock to stay healthy. The human body is made up of bone marrow, flesh, muscle, fat, oxygen, nitrogen, and carbon. The bones, skin, and muscles are the foundation and the sole way the body can move and be flexible. However, the organs, vessels, blood flow, and chemical elements make the body function as perfectly as it does. More than half of the body is made up of water. Almost all of the cell's mass is water. The other chemical compounds in the body are Oxygen, carbon, nitrogen, hydrogen, calcium, and phosphorus. Ninety nine percent of the body's mass is oxygen. All of the chemical components of the human body help it function and work like it does on an everyday basis. Although the body is made up of 65% Oxygen and 18% Carbon, the other elements are also important to its existance. The body is made up of ten percent hydrogen, three percent nitrogen, 1.5 percent calcium, one percent phosphorus, 0.35 percent potassium, 0.25 percent sulfur, 0.15 percent sodium, 0.05 percent magnesium, 0.70 percent of a combination of copper, zinc, selenium, molybdenum, fluorine, chlorine, iodine, manganese, cobalt, and iron, and the rest lithium, strontium, aluminum, silicon, lead, vanadium, arsenic, and bromine. That might seem like a lot of elements, because it is, but each element has a specific purpose and without everything the human body would not function as it does today. Each sickness, every cough, cold, food digested, mile ran, lap swam, bike ride, sprained muscle, donated blood, everything we do the body has the ability to adapt and protect us because of all its chemical components and make up. Some people believe the human has evolved from the ape like animal over millions of years; it is true that on the outside, apr like creatures could have very well evolved in to the human population. But on the inside, there is no other animal nor creature that is as complex and processed as the human body.