"a force sets an object in motion. when the force is multiplied by the time of its application, we call the quantity impulse, and an impulse changes the momentum of that object. what do we call the quantity force multiplied by distance? "

28. evolution

29. environment, survive, offspring  

explanation:

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."