Which Situation Is an Example of Density-Independent Population Regulation

question 119

Multiple Choice

Which situation is an example of density-independent population regulation?

• A) An early cold spell kills 80 percent of the sparrows in a particular area.
• B) When lemmings are abundant, arctic foxes switch their primary diet from mice to lemmings.
• C) Lemming predators search widely for places where lemmings are abundant and concentrate their hunting in those areas.
• D) A contagious disease sweeps through a dense population of squirrels but leaves a less-dense population relatively untouched.
• E) An outbreak of an insect species depletes their food supply; the next generation of insects is underfed and produces few offspring.

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Definitions:

Athletes

Individuals who compete in physical sports, either as amateurs or professionals.

Sports Psychologist

A professional who studies and applies psychological principles in order to enhance athletic performance, cope with pressure, and improve well-being.

Health Psychologists

Health psychologists specialize in studying how biological, psychological, and social factors affect health and illness, and they develop interventions to promote healthy behavior and improve health care systems.

Stress

A state of mental or emotional strain or tension resulting from adverse or demanding circumstances.