What Is True of the Cambrian Explosion

question 39

Multiple Choice

What is true of the Cambrian explosion?

• A) There are no fossils in geological strata that are older than the Cambrian explosion.
• B) Only the fossils of microorganisms are found in geological strata older than the Cambrian explosion.
• C) The Cambrian explosion is evidence for the instantaneous creation of life on Earth.
• D) The Cambrian explosion marks the appearance of filter-feeding animals in the fossil record.
• E) Recent evidence supports the contention that the Cambrian explosion may not have been as "explosive" as was once thought.

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Definitions:

Consent Decree

A legal agreement that resolves a dispute between two parties without admission of guilt, but with an agreement to follow certain actions.

Affirmative Action

Policies and practices aimed at increasing opportunities for historically marginalized groups in areas such as education and employment.

Equal Employment Opportunity Commission

A federal agency that enforces laws against workplace discrimination.

Glass Ceilings

Invisible barriers that prevent certain groups, often women and minorities, from rising beyond a certain level in various hierarchical organizations.