#3- The tiny exoskeleton of a diatom is mostly composed of ______ [calcium carbonate, nucleic acid, starch, or silica]
The tiny exoskeleton of a diatom is mostly composed of silica.
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ivyleaf|Points 360|
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Asked 8/21/2012 2:46:55 PM
Updated 8/9/2014 11:03:50 AM
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