________ are the eighth leading cause of death among older adults.

One effect of sleeping pills is to:

A) decrease REM sleep B) increase REM sleep C) decrease stage 2 sleep D) increase stage 2 sleep

There is clear evidence that females show more aggression than men

a. in those cultures that encourage aggressive behaviors in both genders. b. in those cultures that exhibit lower testosterone levels in women than in men. c. in those cultures that exhibit lower testosterone levels in men than in women. d. in certain situations, for example, protecting offspring from predators.