Why are there shells on the stone?

Because many shellfish live on rocks, and the adhesion of shellfish is amazing, even after shellfish die, shells will firmly adhere to rocks, and finally be calcified by seawater, and then blend with rocks.

Shell (bé iké) is the capsule of mollusks living near the water, and it is a kind of calcification secreted by special gland cells of mollusks, which is used to protect the soft parts of the body. The main components of shells are 95% calcium carbonate and a small amount of shellfish.

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The director of e-commerce operation needs to complete the docking of outreach matters of e-commerce operation department and

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