Competitive labor markets see firms acting as though the marginal labor cost is constant

Transborder environmental impacts can take place when one country's pollution spills over into a second country in all of the following situations EXCEPT

A) when an upstream user pollutes a shared watershed. B) when industrial production in one country creates acid rain in another country. C) when heavy traffic between two or more countries creates semi-global warming. D) the production of exported products degrades the local environment. E) ozone depletion caused by many countries' pollution spills or emissions.

The Fed, when operating efficiently, is able to control both the money supply and the interest rate at the same time

Indicate whether the statement is true or false