Under the Clean Air Act amendments, auto manufacturers were required to reduce the levels of carbon monoxide, hydrocarbons, and nitrogen oxides

How did Andrew Jackson increase the power of the presidency?

A.) fights with Congress led to increased presidential assertions of inherent authority B.) increase presidential popularity invested the president with power from people's goodwill C.) expansion in the size of government made the president the person that people looked to for assistance D.) threats from around the world increased the rally 'round the flag effect and resulted in greater statutory powers for the president

Studies show that voting participation rates are higher for African Americans than political scientists would otherwise anticipate on the basis of socioeconomic status. What is the best explanation for this political phenomenon?

a. As a group, African Americans are older than other groups of Americans and consequently more likely to vote. b. Levels of political efficacy are lower for African Americans than they are for other groups of Americans. c. African American participation rates are enhanced by the effectiveness of organizations in the African American community. d. As a group, African Americans are younger than other groups and consequently more likely to vote. e. As a group, African Americans are wealthier