Life style, environment toxins, and Gene mutations
Food pyramid, because it is a healthy way to show what your eating, and the foods you need to cut out, and the foods you need to eat more.
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.
