Why can't l use the app it help's me so much

What is the purpose of the outer ear? a. to convert mechanical waves into electrical waves b. to evaluate the quality of sound c. to convert sound waves into mechanical waves d. to collect and focus sound waves

Music from which of the following cultures has a 5-tone tonality? african mexican chinese american

In "poem," rukeyser writes in a form of poetry called and uses ordinary, everyday language.