Connect with a knowledgeable community and get your questions answered on IDNLearn.com. Discover reliable answers to your questions with our extensive database of expert knowledge.

Wich of the following describes coral reefs​

Sagot :

Answer:

A coral reef is an underwater ecosystem characterized by reef-building corals. Reefs are formed of colonies of coral polyps held together by calcium carbonate. Most coral reefs are built from stony corals, whose polyps cluster in groups.