A (hydroelectric)
B (wind)
C (geothermal)

i would have a lunch. it's one big package of food, making it one food. : p

is this a psat question, if so do not cheat try your best.

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.

population. population is the number of people or animals in a particular place. an example of population is over eight million people living in new york city.

here is your answer hope i .