_____ causes dehydration and a rise in body temperature.

Ecstasy is classified as a

Smoking marijuana

Astor wanted to try marijuana to experience the effects of which of the following class of drugs?

Even in mild doses, marijuana negatively affects

Adolescents who regularly use marijuana

Why can taking LSD in order to experience its hallucinogenic qualities become a dangerous activity?

A psychologist observes a group of 6-year-olds and a group of 10-year-olds during recess at school in order to assess changes in playgroup preferences between these two ages. This researcher's study uses a _____ design.

Dr. Ramirez conducted a study that compared a group of 20-year-olds and a group of 40-year-olds. Each group was revisited five years later, and again five years after that. This is a _____ design.