Pearl, Проверка

27-August-2024 Tuesday
Is it true that a pearl appears due to a grain of sand trapped inside a shell?

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Is it true that a pearl appears due to a grain of sand trapped inside a shell? - My, Pearl, Gems, Animals, Biology, Clam, Facts, Проверка, Research, Informative, Video, Youtube, The science, Scientists, Longpost

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Youtube Biology Video Gems Pearl Animals Research Clam The science Informative Проверка Scientists Facts

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