If a decrease in income leads to an increase in the demand for sardines, then sardines are

Depletion of tropical rainforests is an example of

a. a negative externality b. the use of variable technology c. adverse selection d. the use of fixed technology e. a clearly defined property right

If a country has a lower opportunity cost of producing oranges, then this is:

a. inefficient resource use. b. an absolute advantage. c. a tariff. d. a comparative advantage. e. a situation where oranges should be imported.