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Which of the Following Statements Is Correct

question 81

Multiple Choice

Which of the following statements is correct?


Definitions:

Microorganisms

Very small, often single-celled organisms that can be bacteria, fungi, viruses, or protozoa, not visible to the naked eye.

Iron Formation

A sedimentary rock consisting of alternating layers of iron-rich minerals and silica or carbonate, typically formed in Precambrian seas.

Seawater

The saltwater that makes up the oceans and seas, covering more than 70% of the Earth's surface, containing various salts and life forms.

Silica-rich Organisms

Organisms that produce silica (silicon dioxide) as part of their structure, such as diatoms and certain sponges.

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