Which of the Following Factors Involved in the Cambrian Explosion

question 41

Multiple Choice

Which of the following factors involved in the Cambrian explosion was likely not due to a changing ocean chemistry?

• A) increased oxygen levels
• B) increased nutrients from soil erosion
• C) evolution of genetic toolkit
• D) evolution of biomineralization

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Definitions:

Unpleasant Shared Experience

A negative or distressing event that is experienced collectively by a group, linking the members through their common ordeal.

Clasts

Fragments or grains of mineral or rock, detached from a parent source, and usually compacted or cemented into a sedimentary rock.

Breccia

A coarse-grained sedimentary rock composed of angular fragments of minerals or rocks cemented together, often formed in volcanic or faulting environments.

Rounded Clasts

Clasts or rock fragments that have been rounded by the mechanical weathering process, typically found in sedimentary rocks.