If cross elasticity between two goods is zero, then the goods are

One reason that some whales were hunted close to extinction is that no one can claim ownership of a whale until it is killed. If property rights to the whale population were established:

a. then whales would surely be hunted to extinction. b. the owners would have the incentive to ensure a sustainable yield of whales, so the whale population could recover. c. no one would hunt whales. d. the price of whales would be kept artificially low so that trade in whales would become unprofitable. e. the whales would be hunted to extinction only when the price is high and it is profitable to trade in whales.

The growth in income inequality in the United States since the early 1980s has been driven primarily by the dramatic:

A. increase in real incomes for the top 20 percent of earners. B. increase in real incomes for the top 10 percent of earners. C. decrease in real incomes for the bottom 20 percent of earners. D. increase in real incomes for the top 1 percent of earners.