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Assessment
What is the primary role of coral reefs in marine ecosystems?
Providing habitat and shelter for marine organisms
Producing freshwater
Filtering pollutants from the water
Creating waves for surfing
Which of the following organisms is primarily responsible for the calcium carbonate structure of coral reefs?
Coral polyps
Sea turtles
Fish
Sea anemones
What is the greatest threat to coral reefs worldwide?
Climate change and ocean acidification
Increased oxygen levels
Natural disasters only
Overpopulation of marine species
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