A scientist observes a bacterial specimen obtained from mud in a swamp. The bacteria are producing hydrogen sulfide (H2S) which creates a foul smell. What process is likely to be generating the H2S

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?