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

Fact 2: Food proteins are changed into energy or heat to be used or absorbed by the body.

Given the two facts above, answer the question "What is the process of breaking down food proteins into energy or heat?" with the following options: 
- dissecting
 - dehydration
 - elimination
 - energy
 - digestion
 - Cooking
 - calorie retention
 - Evaporation


 

     digestion    