PLEASE HELP Which of the following is required for the sodium-potassium pump to transport
potassium ions into an animal cell?
High intracellular concentrations of potassium
High intracellular concentrations of sodium
Low intracellular concentrations of potassium
Energy from ATP

a polymer is a chainlike molecule made up of small molecular units. these small molecular units are called monomers. monomers of polymer can be joined together either naturally or synthetically.  

explanation:

on disadvantage of hydroelectric power is the cost. another disadvantage of using hydroelectric power is finding a water source powerful enough to harvest hydroelectric power.

blue stars have the highest surface temp

stellar distances are usually expressed in light-years

the measure of a star's brightness is called magnitude

hope this !

answer; cnidarians;