In explaining differences in human development, gender and socioeconomic status are important cultural variables to consider.

Research suggests that the umami receptors may have evolved to allow a preference for

a. sugars. b. acids. c. alkaloids. d. sodium chloride. e. glutamate.

Roughly _____ American children under 18 live in poverty

A) one in twenty B) one in ten C) one in five D) one in three