• It is a computer system that records, stores, and analyzes data about the composition of the Earth. • It can produce two and three dimensional maps showing features of the Earth.
• It is used to make models and organize data.

Which of the following is described in the box above?

Why are constitutions, both federal and state, necessary for our government?

Two of these describe "federalism." (choose two answers) select one or more: a. the national government absolutely controls all state governments. b. power is shared by the national and state governments. c. state governments exercise absolute power over the national government. d. it is a compromise meant to eliminate the disadvantages of a "unitary" and a "confederate" system.

The conclusions presented in this article are based primarily on