A Rapid Decline of Amphibian Populations Has Been Observed Worldwide

question 191

Multiple Choice

A rapid decline of amphibian populations has been observed worldwide.Which could not be one of the proposed hypotheses related to this decline?

• A) A fungal disease is the cause.
• B) Increased exposure to ultraviolet radiation is the cause.
• C) Exposure to agricultural chemicals is the cause.
• D) Exposure to an oil spill is the cause.
• E) Frogs die naturally.

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Definitions:

Polyesters

A category of polymers that contain the ester functional group in their main chain, widely used in fibers and plastics.

Diester

A diester is an organic compound formed when two hydroxyl groups in an acid are replaced by ester groups.

Vulcanization

A chemical process for converting natural rubber or related polymers into more durable materials via the addition of sulfur or other equivalent curatives or accelerators.

Synthetic Rubber

A man-made elastomer designed to mimic natural rubber, noted for its elasticity and produced through polymerization processes.