Which of the following traits acquired? 1: the number of petals that grow in a plants flower 2: the wing shape of a wild bird 3: the abillity of some gorillas to use sign language 4: a cheetas abilty to run faster than any other land animal

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?