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Question

An aquatic microscopic organism has two overlapping silica-containing wall layers. Its indestructible wall deposits accumulate over long periods. Which use of the resulting material is correctly identified?

Options

Choose one · Correct answer highlighted

Explanation

The organism is a diatom. Its silica-containing wall deposits accumulate to form diatomaceous earth, which is gritty and is used for polishing and for filtering oils and syrups.