Necessary Nutrients, Waste Material
The function of the digestive system is to provide the body with _______ ________, and to eliminate _______ ______.
Taking food and liquid into the digestive system by way of mouth is called ____?
___ is the breakdown of food into simpler molecules or pieces.
Using physical means to break up food pieces is called ____ ____.
Using specific enzymes to bread down molecules is called _____ ______.