Question

skeleton of coral reefs is composed of?​

Answer 1

Answer:

Calcium Carbonate

Explanation:

Coral polyps secrete calcium carbonate . The coral secretions and their skeletons form coral deposits in the form of reefs.

Answer 2

Answer:

A coral reef is made of thin layers of calcium carbonate

Massive reef structures are formed when each individual stony coral organism—or polyp—secretes a skeleton of calcium carbonate.