Protecting the Great Lakes

The Great Lakes are a crucial freshwater resource, visible from space, supporting millions of people and various industries. Historically, they faced severe pollution, notably the Cuyahoga River fire in 1969. Today, challenges persist, including nearshore degradation, nutrient imbalances, and invasive species. Efforts by Environment Canada and other bodies focus on science-based solutions and public involvement to protect and restore these lakes for future generations.

What percentage of the world's surface freshwater is held by the Great Lakes?

• 21%

• 50%

• 35%

• 10%

Which river caught fire in 1969 due to severe pollution?

• Mississippi River

• Cuyahoga River

• Hudson River

• Colorado River

What were some of the effects of chemical contamination in the Great Lakes?

• Increased fish population

• Deformed beaks in cormorants

• Improved water quality

• Thicker eggshells in eagles

What can cause harmful algal blooms in the Great Lakes?

• Excessive nutrients

• Balanced nutrient levels

• Lack of sunlight

• Cold water temperatures

How do wetlands help the Great Lakes ecosystem?

• By raising water levels

• By removing excess nutrients

• By introducing new species

• By increasing fish population

Which of the following is an aquatic invasive species found in the Great Lakes?

• Sea Lamprey

• Salmon

• Trout

• Bass

How can aquatic invasive species enter the Great Lakes?

• Through the air

• Through underground tunnels

• Via ships' ballast water

• By walking on land

What is the best way to deal with invasive species in the Great Lakes?

• Reduce water levels

• Introduce more species

• Prevent their entry

• Increase water temperature

Who is responsible for protecting the Great Lakes?

• Only environmental organizations

• Both governments and citizens

• Only the U.S. government

• Only the Canadian government

What can individuals do to help protect the Great Lakes?

• Ignore environmental guidelines

• Use hazardous substances freely

• Dump waste in the lakes

• Use eco-friendly products