If the key variables have not been defined or are defined in a manner inconsistent with the researcher's definition, then the usefulness of the data is limited. This statement refers to the ________ criteria for evaluating secondary data

Emissions trading programs are also known as:

a) command-and-control systems. b) cap and trade. c) carbon tax regimes. d) carbon fees with rebates.

Which of these location forms is unplanned as a unit?

a. regional shopping center b. neighborhood shopping center c. community shopping center d. central business district