What is an estuary?

What is an estuary?

• A body of water with only freshwater

• A body of water with only saltwater

• A semi-enclosed body of water where freshwater and saltwater mix

• A large lake connected to a river

Why are estuaries often called "nurseries of the sea"?

• They are where new types of fish are discovered.

• They provide a safe environment for young fish and wildlife to grow.

• They are shallow and easy for baby animals to swim in.

• They have many plants that look like baby animals.

What is the role of phytoplankton in estuaries?

• They filter out pollutants from the water.

• They are producers that provide food for many other organisms.

• They help create sandbars.

• They are a type of fish that lives in estuaries.

Which type of estuary is formed when sandbars build up along the coastline, partially cutting off water from the sea?

• Coastal Plain Estuary

• Tectonic Estuary

• Bar-built Estuary

• Fjord