Must contain producers, consumers, decomposers and dead inorganic matter
Answer:
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.
Explanation:
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A is the answer because this the only thing that folds
Sweat glands is the major function in thermoregulation.
