Fact 1: Digestion is the process of breaking down food into components the body can absorb.

Fact 2: Digestive enzymes are necessary for a complete digestion.

Given the two facts above, answer the question "What causes food to break down?" with the following options: 
- Blood
 - bacteria
 - Enzymes
 - Saliva
 - sodium
 - heat
 - Esophogus
 - Acids


 

   Enzymes      