The Unique Double Shells of Diatoms Are Made of

question 2

Multiple Choice

The unique double shells of diatoms are made of

• A)cellulose.
• B)silica.
• C)chlorophylls.
• D)agar.

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Definitions:

Island Arc

An arc of volcanic islands that forms along the edge of a tectonic plate, usually above a plate that is being subducted.

Rifting

The process by which the Earth's crust is stretched and broken apart, leading to the formation of rift valleys and, eventually, new ocean basins.

Mesozoic

The geological era between 252 to 66 million years ago, known for the dominance of dinosaurs.

Paleozoic

An era in Earth's geologic time scale, from about 541 to 252 million years ago, marked by the development of early life.