Explain why it is correct to say that the air and good passages cross in the pharynx?

Sweating and breathing is an example of differentiation specialization maintaining homeostasis metabolism

What percentage of light hits earth's surface directly?

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?