The lack of clearly assigned __________ contributes to __________ of common resources.

When unemployment rises above the natural rate it reflects the existence of ____ unemployment.

The least squares criterion is _____.

A/an ________ is a device designed to remove particles and pollutant gases.

All of the following except ________ would result in improved energy-use efficiency.

Almost 72% of the world's reserves of oil shale are found in ____.

Consumers affect which goods and services are produced because they _____.

Consumers _______ factors of production in the _______ market.

Consumer shopping on the web is often called ____.

Bartering is the exchange of goods and services without the use of _____.

An inferior good is one for which a(n) _____ in buyers' income causes a(n) _____.