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21-10-2016
Biology

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Choose the correct sentence to complete the sentence. Silicon dioxide forms the cell walls of _____. A. diatoms B. Insects C. plants

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johnkellock johnkellock

30-10-2016

A. Diatoms. Diatoms are a major group of algae, and are among the most common types of phytoplankton. The diatom cells are contained within a unique silica cell wall known as a frustule made up of two valves called thecae.

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