Diatoms are characterized by ____ and are the source of economically useful_____.
A) calcium carbonate shells; ozone
B) calcium carbonate sheaths; petroleum
C) silica shells; diatomaceous Earth
D) silica sheaths; limestone
E) silica carbonate shells; diatomaceous Earth

Question

Quizplus · Accepted Answer

Diatoms are characterized by their unique silica shells, known as frustules, and are a major source of diatomaceous earth, which has various industrial and commercial applications.

Diatoms Are Characterized by ____ and Are the Source of Economically