Acar jack allows you to lift up a heavy car. the car jack works because
a) you apply a greater force over a longer distance.
b) you apply a smaller force over a longer distance.
c) you apply a greater force over a shorter distance.
d) you apply a smaller force over a shorter distance.

dopamine..

"it was found that some people who were taking the drug l-dopa to raise their levels of dopamine were developing schizophrenic-like symptoms supporting research a strength of the dopamine hypothesis is that there are many studies which have shown support for the neurochemical explanation."