Question

What digestive substance is found in the mouth? What does it do?

Answer 1

Saliva contains enzymes that help break down food molecules.

Explanation:

It contains amylase , an enzyme that will break down longer carbohydrate chains into shorter ones, and finally into sugars.
The main function of saliva is to make the food swallowable, and by chewing we mix the primary enzymes through our food.