In the early years after the Europeans were first introduced to tobacco use, which country held a monopoly on the world market?

Infants who learn to summon their parents with a particular pitch of crying, have most likely learned this through

a. habituation. c. operant conditioning. b. classical conditioning. d. observational learning.

In the United States, how did the life expectancy of Black Americans compare to the life expectancy of White Americans in 2010?

a. ?Blacks had a life expectancy of 3.8 years less than Whites. b. ?Blacks had a life expectancy of 2.3 years more than Whites. c. ?The life expectancies of Blacks and Whites were roughly equal. d. ?The discrepancy in life expectancy between Blacks and Whites was increasing.