Plato answer:
Stimulation of a neuron causes a change in the charge inside the cell from negative to positive. This change is caused by ions, which are atoms with an electrical charge, moving across the cell. This change within the cell is consistent with the definition of an electric charge.
Because of the increase in hydrostatic pressure
A sentence :
i read a book about "responding variable".
hope that helped!!
I believe it is 4 but I may be wrong :|
Because they need it to get protein and create it. Protein helps the plants grow.
