A low amount of calories or no calories
Answer:
Mark me brainliest plssssss
Explanation:
Plsssssssssssssssssssssssssssssssssssssssssssssssssssssssssss
Chemical breakdown is affected by it I just did in zymes treated by the track and accessory organs as well as hydrochloric acid secreted by the stomach the G.I. tract is protected from the corrosive actions of these enzymes and acid by a mucous membrane composed of epithelial cells which secrete mucus and fluid
Heredity is an external influence.
WHAT IS HEREDITY?
A process in which genetic factors are transferred from generation to generation.