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).
When you play two notes at the same time it is usually called an interval; however, it can also be called a chord, even though chords are normally three or more notes. Elmer Vasquez Sagastume. + 6 others found this useful.