Answer:

Explanation:

Ingestion is the consumption of a substance by an organism. In animals, it normally is accomplished by taking in a substance through the mouth into the gastrointestinal tract; such as through eating or drinking. In single-celled organisms ingestion takes place by absorbing a substance through the cell membrane.

DIGESTION the process of breaking down food by mechanical and enzymatic action in the alimentary canal into substances that can be used by the body.

Absorption is the movement of digested food molecules through the wall of the intestine into the blood or lymph. The small intestine is the region where digested food is absorbed. Most absorption happens in the ileum.

assimilation: the incorporation or conversion of nutrients into protoplasm that in animals follows digestion and absorption and in higher plants involves both photosynthesis and root absorption

Excretion is a process in which metabolic waste is eliminated from an organism. In vertebrates this is primarily carried out by the lungs, kidneys, and skin. This is in contrast with secretion, where the substance may have specific tasks after leaving the cell. Excretion is an essential process in all forms of life.

Answer:

1.) The process of taking food, drink, or another substance into the body by swallowing or absorbing it.

2.) The process of breaking down food by mechanical and enzymatic action in the alimentary canal into substances that can be used by the body.

3.) The process or action by which one thing absorbs or is absorbed by another.

4.) The absorption and digestion of food or nutrients by the body or any biological system.

5.) The process of eliminating or expelling waste matter.