Crab and snail both have a protective coving. Is it made up of the same material?
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calcium carbonate
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Crab and snail both are having a protective covering. It is not made of the same material.
- Crab belongs to the phylum Arthropoda. All arthropods have a layer of chitin on their outer skin that provides protection to them.
- Crab's exoskeleton is composed of chitin with depositions of iron sulfide.
- Snail belongs to the phylum Mollusca. All mollusks have a tough outer shell that covers the mantle. It is made of CaCO₃.
- Thus a snail’s outer shell is made of calcium carbonate.
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