Why can a person not swallow food and talk at the same time?
a. the brain cannot control two activities at the same time.
b. in order to speak, air must come through the pharynx to form sounds.
c. in order to swallow, the epiglottis must close off the larynx (trachea).
d. both b and c are correct.

Why do carbohydrate molecules function so well as fuel for the body?

Why is excretion necessary to maintain homeostasis?

It is believed that europa, one of jupiter’s moons has an ocean beneath its surface. based on how earth’s oceans and atmosphere are believed to have formed, what can be said about europa’s supposed ocean? the arrival of in the early days of europa’s existence could have formed its ocean. it is likely that the water experienced , similar to earth. it is also possible that this water is retained beneath europa’s surface and in its atmosphere due to europa’s .