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0:52
YouTube
Le Club d'Aventure d'Outre-Mer
What Exactly Are Coral Reefs?
Short answer: Underwater calcium carbonate ecosystems built by coral polyps. Coral reefs are the product of prganic activity rather than geologic. They are thus living reefs that an grow over time. Coral polyps accrete minerals from the sea water to built their hard calcium carbonate shells and their reefs are known as the rainforests of the ...
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