Cuban Tree Frogs Are a Much Greater Problem in the United

question 29

Multiple Choice

Cuban tree frogs are a much greater problem in the United States than in Cuba; what hypothesis best suggests why?

• A) Foods available to the tree frogs in the United States have a higher nutritional quality and represent an increased carrying capacity for frog populations.
• B) The United States has a cooler climate, which allows the tree frogs to be more active and aggressive.
• C) Tree frogs were introduced without the natural biological constraints they experience in Cuba and have become much more numerous in the United States.
• D) Natural selection gradually improves a species competitive advantages; the immigrant frogs simply reflect these evolutionary changes.

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Definitions:

Allegations of Sexual Harassment

Claims made against an individual or organization regarding unwelcome and inappropriate sexual advances or behaviors.

Naturalistic Observation

A research method in which subjects are observed in their natural environment without any manipulation by the researcher.

Assembly Line

A manufacturing process in which parts are added to a product in a sequential manner to create a finished product more efficiently.

Impractical to Manipulate

A description of situations or variables that are difficult or unethical to control or alter for the purpose of scientific study.