Which of the following countries is considered to be a democracy? i. kenya ii. sudan iii. south africa a. i. only b. ii. only c. iii. only d. i. and iii. only

On venus, which of the following drives geological change? a. hurricanes b. volcanoes c. tsunamis d. earthquakes

Which of the following is not a challenge to instituting sound global environmental policies? a. most changes are inexpensive and easy to implement. b. elected leaders who support unpopular environmental issues often are not re-elected. c. economic considerations outweigh environmental ones in many societies. d. there is no way to enforce international environmental agreements.

Which factors add to the greenhouse effect and are caused by human activities?