This is a behavioral program in which a person's desirable behaviors are reinforced systematically throughout the day by the awarding of tokens that can be exchanged for goods or privileges.

This term refers to the number of people per unit area (usually a kilometer or a mile). this could refer to the number of people per square mile in a city, a county, a province, a state, or a nation.

Lots of points: economics: the is the dollar value of all final goods and services produced within a country’s borders within a given year. a. gross domestic product b. business cycle c. inflation rate d. net exports

Recently, there has been pressure to loosen clean air standards. use economic arguments to support or oppose this proposed action.