While only 9% of the world's population lived in cities in 1900, approximately what percent will be city dwellers in 2030 if present trends continue?

Brianna is the sheriff of Brazos County. Which statement best describes her responsibilities?

a. She must provide administrative support to the justices of the peace. b. She is responsible for serving subpoenas and other summons. c. She must organize periodic task forces to seize drugs. d. She is responsible for maintaining the county jail.

What determines whom we select as our governmental leaders and what policies these leaders pursue?

a. the media b. public opinion c. politics d. public policy