Unemployment caused by people voluntarily quitting work in order to seek more attractive employment is called:

Studies of NAFTA have concluded that increases in the variety of U.S. imports from Mexico are equivalent to about a ________ per year reduction in Mexican import prices.

a. 100.2% b. 10.2% c. 1.2% d. 0.2%

Natural resources should be left in the ground

a. if their discounted future value exceeds their current value b. so future generations will be able to use them c. until companies agree to restore land after mining d. because we may run out e. economists have no good way to analyze this question