A perfectly elastic supply curve

Studies of 18th century colonial demographics indicate that

a. the population growth rate of blacks was similar to that of whites. b. migration was the main reason for the growth in the black population. c. the death rate of blacks were much higher than the death rate of whites. d. the birthrate of blacks was much lower than the birthrate of whites.

Adverse selection refers to a situation in which

a. employers have more information about a job's salary than the job candidate does b. a job candidate has more information about the job's salary than the employer does c. employers have more information about a job candidate's abilities than the candidate does d. a job candidate has more information about her abilities than the employer does e. only below-average job candidates apply for a job