Answer:
Food mass is stored as mass, and then transformed into energy
Step-by-step explanation:
When we eat food, the mass of food undergoes the digestion process and is being converted to various molecules in the body. For instance carbohydrate foods are broken down into glucose which is now stored in the body as glycogen.
When energy is required in the body, this glycogen is broken down into glucose again and mass is converted to energy required to do work in the body.