Answer:
Of the three stars in the system, the dimmest - called Proxima Centauri - is actually the nearest star to the Sun. The two bright stars, called Alpha Centauri A and B form a close binary system; they are separated by only 23 times the Earth - Sun distance.
Tidal, wind, and oil energy are derived from the sun. Nuclear isn't.
A highly frequency sound wave corresponds to a high pitch sound
