What ethical issues might arise in radio stations? (people who run radio stations or work at radio stations)

There are lots of situations that can occur. One is sexual harassment which is prevalent in many work spaces. Another is revealing information that might not want to be shown. There is a show on a radio station where people can call in and ask first dates why they didn't call or see if a person is cheating which poses a moral problem in terms of privacy.

i'm not sure i completely understand your question, but i will do my best.

i think the answer you are looking for is sequence. (see below)

a repeated melodic fragment would be best defined as repetition, while repeated chords (different or the same) could be a chord progression. however, you then mentioned the chord and melodic fragment beginning on higher or lower pitches, in that case, the answer could be best defined as a sequence. the definition of a sequence is as follows: "the restatement of a motif or longer melodic (or harmonic) passage at a higher or lower pitch in the same voice."

let me know if this !