Answer:
the answer is 21 :)
<em>hope this helps</em> ^^
Answer:
its passive transport
Explanation:
The sodium-potassium pump sets the membrane potential of the neuron by keeping the concentrations of Na+ and K+ at constant disequilibrium.
There are several things that can cause water erosion. The one that is not a means of water erosion is natural springs. The correct answer is C.
