Question

The process by which breakdown of food molecules into small molecules occur.
1.) Respiration
OR
2.) Digestion​

Answer 1

Digestion is the answer of your question as when we eat something it Goes down a number of process to form more simpler substance do that it can be easily digested .

Answer 2

Answer:

digestion

Explanation:

as breakdown of food is done in mouth is part of digestion