Glucose and oxygen react together in cells to produce carbon dioxide and water and releases energy. The reaction is called aerobic respiration because oxygen from the air is needed for it to work.
Tone color, also known as timbre, is the quality of a sound that is not characterized as frequency (pitch), duration (rhythm), or amplitude (volume).
An opera's words are called its libretto, whereas, in a stage play, the words are called the script, and in a movie they're called the screenplay.