1. Describe ways in which (a) a rise and (b) a fall in the average global temperature could affect Earth's hydrologic cycle.
2. Explain why there are layers of temperature in a lake and how/why they change during different seasons.
3. Describe and discuss effects of flood control structures, such as artificial levees, on the damage caused by large floods.
4. Consider how a rise or a fall in average global temperature might affect surface water and ground water reserves in the United States.
5. Discuss the pros and cons of surface water and ground water diversion projects.