The average adult would reach alcohol's LD-50 by drinking __________ standard drinks an hour

Which of the following can entrain the circadian sleep-wake cycles of animals living under constant lighting conditions?

A) regular daily bouts of social interaction B) regular daily meals C) regular daily bouts of exercise D) all of the above E) none of the above

Which of the following has been shown to influence which toys a young child prefers?

a. Amount of testosterone exposure before birth b. Being born in summer months versus winter months c. Eating a vegetarian or nonvegetarian diet d. Being left-handed or right-handed