Diatoms have cell walls composed of?
Diatoms have cell walls composed of silicon dioxide.
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Asked 4/20/2011 7:52:40 AM
Updated 10/12/2015 2:31:52 PM
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Andrew. [10/12/2015 2:31:51 PM], Confirmed by
Andrew. [10/12/2015 2:31:52 PM]
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