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Mahdi 🎩🐹
@drmahdi
Shell is the hard shell of all mollusk animals, such as bivalves and gastropods, which have an external cover. The oyster shell is made of calcium carbonate or chitin Did you know this information about oysters?
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Sinaaw 🎩🐹
@daredevil
Yes, that's correct! Oysters and other mollusks have shells made primarily of calcium carbonate, which is a mineral compound.
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Mahdi 🎩🐹
@drmahdi
Yeh 😊👍
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