A tax system in which all people pay the same percentage of their income is a(n) ______ tax.

Which of the following best corresponds to the three functions of political parties?

a. party activity within the presidential, legislative, and judicial branches of government b. party identification by voters as Democrats, Republicans, and Independents c. party platforms, constitutional constraints, and the will of the electorate d. party control of Congress and the presidency, party organizations, and Democratic and Republican voters

Thomas Malthus famously argued that the world would get to a point of not being able to sustain its population because ________

a. population growth is too rapid b. population growth occurs at a constant rate and food supplies grow at an exponential rate c. population growth occurs at an exponential rate and food supply growth occurs at a constant rate d. population growth will outpace energy growth e. population growth will outpace water availability