Light-sensitive cells in the retina are called:

In examining patterns of marital sexuality across cultures, which of the following has been found across cultures?

A) Restriction of sex only to married couples B) Male dominance and female submission C) Celebrating sex as a recreational activity D) Restricting sex during menstruation

Medications for psychological disorders

a. were first used centuries ago. b. were first used only recently. c. still currently use some ancient ingredients, such as "mummy powder." d. made the search for the causes of disorders more difficult.