The exhalation of breath from the lungs is called ____________.
expiration
Exhalation is one of the phases of the process of breathing. This typically involves the release of carbon dioxide from the body. Carbon dioxide is generated from the oxidation of complex organic foodstuffs during a process called respiration, a process in living organisms involving the production of energy, typically with the intake of oxygen and the release of carbon dioxide from the oxidation of complex organic substances. Whereas digestion the process in the alimentary canal by which food is broken up physically, as by the action of the teeth, and chemically, as by the action of enzymes, and converted into a substance suitable for absorption and assimilation into the body. Nutrition is the mode of intake of food and utilizing of it in the body. It is needed for growth, reproduction and other body functions.