Which physical assessment of the skin indicates that a client is addicted to phencyclidine?

(amoeba sisters video recap: pedigrees and need

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?

Which of the following is the earliest era of earth's geologic time scale? cenozoic mesozoic precambrian paleozoic