A coral is a type of ________ that secretes ________ to form an organic rock home.

Name: A coral is a type of ________ that secretes ________ to form an organic rock home.
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Question

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Corals are polyps that secrete calcium carbonate to form their hard, stony skeletons or homes. Silica is not commonly used by corals to form their structure, and algae are not corals but can form symbiotic relationships with them. Hematite is a mineral that is not typically involved in coral formation.

A Coral Is a Type of ________ That Secretes ________

A Coral Is a Type of That Secretes