In the short run, the aggregate supply curve is:

Measuring the effects of labor immigration shows:

a. that as workers move, they disrupt their families and cause huge costs in the recipient nation. b. that most immigrants spend months trying to find work. c. that immigration benefits the recipient nation by raising the marginal product of capital, expanding laborintensive production, and lowering prices of laborintensive goods. d. that immigration is very harmful to the host nation because of a huge increase in the unemployment rate

Which of the following is NOT a scarce resource?

A) Gold B) Pollution C) Petroleum D) iPhones