Exploring Marine Biomes: Estuaries and Coral Reefs

The video tutorial explores two distinct ecosystems: estuaries and coral reefs. Estuaries are areas where freshwater from rivers meets saltwater from the ocean, resulting in high biological productivity and a rich food supply for various animals. Coral reefs, on the other hand, are vibrant and diverse ecosystems formed by corals over long periods. They host thousands of marine species, including fish, eels, sea urchins, and sharks, making them one of the most colorful and biologically diverse ecosystems on Earth.

What is an estuary?

• A desert ecosystem

• A location where freshwater and saltwater mix

• A place where only saltwater is found

• A type of forest

Why are estuaries considered highly productive?

• They are very deep

• They are home to many predators

• They have a lot of sunlight

• They produce a lot of food for various animals

What makes coral reefs unique among ecosystems?

• They are the most biologically diverse and colorful

• They are made entirely of plants

• They are found only in cold waters

• They are the largest ecosystems

How are coral reefs formed?

• By the movement of tectonic plates

• By animals called corals over long periods

• By volcanic activity

• By the accumulation of sand

Which of the following is NOT typically found in coral reefs?

• Fish

• Eels

• Sea urchins

• Polar bears