Most likely c. variable since it says a factor that "can vary"
Answer:
b) They are the neuron’s receivers; they carry the impulses toward the cell body, and most neurons contain many of them.
Explanation:
Within the first few hours your blood pressure l, pulse, and temperature of extremities have resumed their home static levels. The next eight hours see that nicotine levels that are still within the bloodstream have fallen to 6.25 percent of average daily levels--a reduction of 93.75 percent.
