How can people best use and protect Earth’s freshwater ecosystems?
In this chapter, students learn about the Great Lakes, including environmental threats to this freshwater ecosystem and efforts to manage the lakes. Students analyze data that illustrate the state of the Great Lakes today, such as bald eagle numbers, wetland areas remaining, and pollution levels.
• evaluate the environmental health and management of the Great Lakes freshwater ecosystem.
• examine the environmental challenges facing global freshwater ecosystems and the impending crisis in fresh water supplies.
Students will define and explain the importance of these key geographic terms:
ecosystem, food chain, food web, freshwater, watershed, glacier, runoff, point-source pollution, non-point-source pollution, invasive species