______ is the study of the earth and its resources, while ______ is the study of the ways that humans interface with the environment.

Compared with the Articles of Confederation, federalism under the Constitution has led to

a. more local autonomy, at the expense of the states. b. a weaker national military. c. greater centralization of power. d. increased state autonomy.

Which of these is a true statement concerning the relationship between age and opinions?

A. People tend to be more politically engaged in their youth. B. Groups of citizens of the same age can be shaped by the same political events. C. Older people are more likely to be influenced by current political trends. D. As older generations die, the overall opinions in the population change very little.