Choose all that apply. which of the following contribute to your body's digestive process?

muscle movements
chemical reactions
physical processes
respiration

chemical reactions

physical processes

Explanation:

Mechanical or physical digestion helps in the break down of food into small physical parts which aid in its digestion. The mechanical or physical digestion begins in the mouth the teeth macerate the food. The stomach muscles also contract and relaxes which gives a churning motion to the food.

The chemical process is performed in the mouth, stomach, and intestines which releases chemical enzymes and juices to digest the food into nutrients easily absorbed through the bloodstream.

the skeletons of most mammals reach a certain size and then stop growing. however, many animals, including some mammals, keep growing throughout their lives. kangaroos, for example, just keep growing and growing until they die. also, the longer an animal lives the greater the chance it might catch some deadly disease.