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Diatoms are also called 'pearls of the ocean' why? What is diatomaceous earth?
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Ans. Diatoms are also known as the pearls of the ocean since they are the main producers in the marine world. Their walls are composed of silica and leave behind a considerable amount of cell deposits in their environment. This substance is known
as diatomaceous earth. Diatomaceous earth has a gritty texture and is used in polishing and oil and syrup filtration.
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