Coral appears to be a giant stony mass, but it is actually made up of:

A. 4,000 different kinds of shellfish
B. Tiny living creatures called polyps
C. Various reefs and islands
D. Fattened plant-eating creatures



Answer :

Final answer:

Coral is made up of tiny living creatures called polyps that secrete calcium carbonate to form reefs.


Explanation:

Coral is actually made up of tiny living creatures called polyps. These marine invertebrates secrete calcium carbonate to form an external skeleton, gradually accumulating to form a reef. Coral reefs, rich with marine organisms, are vital ecosystems facing threats due to human activity.


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