1. Describe a banjo, it's appearance, its construction, its sound, and how it is used musically.

A banjo has 4 or 5 strings. Most commonly it is tuned in a G chord, although it is also tuned in other chords. The body is made with the same material as the top of a drum with a kind of metalic sound. Banjos are commonly played in bluegrass music.

it's d, robert k merton. in 1994 he was awarded the national medal of science for his contributions to the field and for having founded the sociology of science.