The shells of diatoms and radiolaria,which accumulate on the abyssal plain,are composed of
A)calcium carbonate.
B)iron sulfide.
C)silica.
D)sodium chloride.

Name: The shells of diatoms and radiolaria,which accumulate on the abyssal plain,are composed of A)calcium carbonate. B)iron sulfide. C)silica. D)sodium chloride.
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Quizplus · Accepted Answer

The shells of diatoms and radiolaria are composed of silica, which accumulates on the abyssal plain as they die and their silica-based skeletons settle to the ocean floor.

The Shells of Diatoms and Radiolaria,which Accumulate on the Abyssal