Which statement best describes why a calcium-fortified juice would advertise that it is good for growing children?
A
Calcium helps the growth of bones.
B.
Calcium provides energy for growth.
h
С
Children need to drink a lot of fluids.
D
Children need calcium to prevent allergies.

the speed increase from w to x due to increased gravity force

the speed decreases from x to y due to decrease in gravity

there is no

explanation:

many other transport proteins, often called pumps, move materials against a concentration gradient. active transport drives molecules across a membrane from a region of lower concentration to a region of higher concentration. this process, shown in figure 5.1, uses transport proteins powered by chemi- cal energy.