Answer:
Dopamine
Explanation:
It's not adrenaline since that's the flight or fight chemical your body releases in cases of danger and meth has nothing to do with it.
It's not THC since that's the chemical in marijuana that gives you the dopamine rush, which is unrelated to meth
It's not Hormones, this one just doesn't make sense.
The nervous system is comprised of two major subdivisions, the central nervous system (CNS) and the peripheral nervous system (PNS).
Its true smokes do have a greater chance at developing deadly diseases
