Why do nations have embassies?

Which of these statements are true about scientific theories and hypothesis

As a small change in a person's dna can cause a genetic disorder

According the inverse square law, doubling the distance from the source of the sound, a speaker, for example, will drop the sound 6 db each time. if you were standing in the back of an auditorium, 32 feet away from a speaker not using any amplification, would you be able to hear a speaker clearly? why or why not?