Air Force Bases. Originally, the Air Force started out as a smaller specialized unit within the Army. Post World War II, in 1947 the Air Force was established as an individual branch of the Military. The Air Force today maintains a commitment to keeping global vigilance, reach and power.
On top of harnessing the substances we consume, the digestive system is also responsible for excreting waste from the body. Metabolism is the process that your body uses to convert the food and drink that you consume into energy.
The major function of the digestive system is to digest or break down foods that are taken into the body. the digestive process mechanically and chemically breaks down food so it can be absorbed into the body to nourish cells and provide energy.