Why do we get old?

Well , we get old because we take in to much oxygen . Then our lungs get to tired and fail to pump oxygen and co2 (carbon dioxide) round our bodies. Then we die.

Their are also many other possible situations that could cause ones so called death, or passing. The human heart, just like the lungs gets weary and tired after many years of pumping and can build up dangerous ammounts of cholesterol and shut down. Many human beings pass due to their own abuse on the human body, as in smoking, drinking ect. Their is simply many ways the human body can come to a demise, depending on the individual and their physical history.