An international division of labor will have no effect on total world output because resources are limited

Hank requires 1 hour to cut the grass and 3 hours to clean the house. His sister Holly requires 1 hour to cut the grass and 4 hours to clean the house. Which of the following statements is true?

A) Hank has a comparative advantage in both cutting the grass and cleaning the house. B) Hank and Holly both have a comparative advantage in cutting the grass. C) Hank has a lower opportunity cost of cutting the grass. D) Hank has an absolute advantage in both cutting the grass and cleaning the house. E) Holly has a comparative advantage in cutting the grass.

Immigration into the U.S. over the past century has caused the percentage of immigrants in the U.S. population to

A) fall steadily until the 1970s and increase thereafter. B) remain relatively constant over the time period. C) fall steadily over the entire century. D) rise steadily over the entire century. E) rise steadily until the 1970s and fall thereafter.