Answer:
The function of the digestive system is digestion and absorption. Digestion is the breakdown of food into small molecules, which are then absorbed into the body. The digestive system is divided into two major parts: The digestive tract (alimentary canal) is a continuous tube with two openings: the mouth and the anus.
1000 calories, as 1 calorie is the energy needed to raise 1g of water by 1 degree at normal atmospheric pressure.
