Respiration is the physical act of inspiration and exhalation of oxygen. Gas exchange is what happens in the lungs to use the oxygen that is brought in and expel the Carbon Dioxide brought back into the lungs from the cells. Respiration is the physical act of inspiration and exhalation of oxygen.
Definition of polyphony. : a style of musical composition employing two or more simultaneous but relatively independent melodic lines : counterpoint.
Polyamory and Polyfidelity. Polyamory is a relationship style that allows people to openly conduct multiple sexual and/or romantic relationships simultaneously, ideally with the knowledge and consent of all involved in or affected by the relationships.