YourStory | First-Person K12 Education

What is the primary reason coral reefs are important to marine ecosystems?

They provide habitats for a diverse range of marine species.They are the main source of energy for ocean currents.They help control the salinity of the ocean.They are the only habitat for sea turtles.

Which of the following organisms are commonly found in coral reef habitats?

Coral polypsSea urchinsClownfishAll of the above

What human activity is most directly threatening coral reef ecosystems?

OverfishingCoral bleachingCoastal developmentAll of the above

Assessment

What is the primary reason coral reefs are important to marine ecosystems?

Which of the following organisms are commonly found in coral reef habitats?

What human activity is most directly threatening coral reef ecosystems?