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.
2. Obsolete, unison. Also called monody, monophony. â homophonous, adj. the state or condition of a letter, word, or symbol having the same sound as another but a different meaning, regardless of sameness or difference in spelling, as choirlquire.