This youtubr claimnomore that I found is so funny, but how has he not blown up yet? (No toxic)

Amplitude is: a. the number of waves in a certain amount of time. b. the distance between the top or bottom of a wave and the center of the wave. c. the noise floor acceptable in recording. d. the distance between two identical points on a wave.

Sound waves can travel only in the aira. trueb.false

We all want to be seen as dedicated employees.when should you stay at home from work? why