ellieewell ellieewell

23-10-2020
Biology

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The substance secreted by corals that composes their hard skeleton.

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Аноним Аноним

23-10-2020

Answer:

calcium carbonate

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.

Explanation:

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