Freshwater Ecosystems and Watersheds

Multiple Select

Which of the following are examples of anthropogenic pressures on freshwater systems?

• Pollution from agricultural runoff

• Urbanization increasing runoff

• Natural rainfall patterns

• Climate change

Multiple Choice

What percentage of Earth's water is freshwater?

• 2.5%

• 10%

• 25%

• 50%

Open Ended

Why is freshwater considered vital for human societies and ecosystems?

Multiple Choice

Which of the following is an example of a lentic freshwater ecosystem?

• Lake

• River

• Stream

• Marsh

Open Ended

Explain how watersheds are defined and why they are important for freshwater ecosystems.

Multiple Choice

What is a possible consequence of damaging freshwater systems?

• Eutrophication and dead zones

• Increased fish population

• Improved water quality

• Expansion of wetlands

Open Ended

Describe three actions individuals can take to help protect freshwater resources in their daily lives.

Multiple Select

What are some common sources of pollution that can affect the water quality in a local watershed?

• Industrial waste and runoff

• Natural rainfall

• Residential lawn chemicals

• Agricultural fertilizers

Open Ended

Why is freshwater important for humans and the environment?