The size of a population refers to the “Amount”
Answer:symbol for atomic no is(Z) and for mass no is (A).
Explanation:
Okay well the signal or the movement coming through the neuron(and its axon) is about the ions. The ion is a charged like particle, such as Na+ (If you remember that). Na+ is a sodium ion. So most of those ions I was talking about before just simply flow in or out of the cell. I hope this helps! <3