Geologists Use Radioactive Elements in Rocks Mainly to Identify

question 34

Multiple Choice

Geologists use radioactive elements in rocks mainly to identify:

• A) their relative age.
• B) an angular disconformity.
• C) a nonconformity.
• D) their absolute age.

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Definitions:

Volvox

A genus of freshwater algae that forms spherical colonies of up to 50,000 cells.

Ulva

A genus of green algae, commonly known as sea lettuce, which is found in marine environments worldwide.

Saprotrophs

Organisms that feed on and decompose dead organic matter, recycling nutrients back into the environment.

Diatoms

A major group of algae, specifically microalgae, characterized by their unique cell walls composed of silica.