The skeleton of corals is formed of

Silica.

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Calcium carbonate.

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Chitin

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Spongin fibres.

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Solution

The correct option is B Calcium carbonate.
This gives a hard & resistant nature in the marine environment.

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Calcium ion combines with the bi-carbonate ion to form calcium carbonate. In the ocean most of the calcium carbonate is made by shell building organisms called calcifying organism such as corals.

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The skeleton of corals is formed of

The correct option is B Calcium carbonate.This gives a hard & resistant nature in the marine environment.

The correct option is B Calcium carbonate.
This gives a hard & resistant nature in the marine environment.