#9
The system is the body's garbage service.

Why is excretion necessary to maintain homeostasis?

Modern whales developed their traits through natural selection what occurs during the process of natural selection

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?