In humans, the process of digestion begins in the where food is into small pieces by the teeth. The helps by moving these pieces around. These pieces are covered by , or spit. The saliva makes the food slippery so that it is easier to . It also helps to break down the food.

What is a limitation of using a chemical formula, such as c6h1206, to represent a compound? the chemical formula does not show the types of elements that make up the compound. the chemical formula does not show how the atoms are connected to one another the chemical formula does not show the number of atoms of each element in a molecule. the chemical formula does not show the chemical symbols of the elements in the compound