In a nonequivalent control-group design, if the control group does NOT change but the experimental group changes markedly, even going far beyond the level of the control group, it is called a

The Superfund set up to finance the clean up of hazardous waste sites is funded primarily through:

A. fees charged to past polluters. B. taxes on hazardous chemicals. C. income taxes. D. companies thought to be polluting.

Which of the following did NOT contribute to the demise of urban political machines?

a. The large number of immigrants coming to America with limited language skills b. The relative values of machine-dispensed favors declined c. The rising influence of organized labor d. The Great Depression and federal government involvement with the needs of the poor