Which of the Following Is an Example of Density-Independent Population

question 115

Multiple Choice

Which of the following is an example of density-independent population regulation?

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

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Definitions:

Natural Rate

Often refers to the natural rate of unemployment, indicating the lowest unemployment rate an economy can sustain over the long term without causing inflation.

Unemployment

The situation where individuals who are able and willing to work do not find jobs, expressed as a percentage of the labor force.

Real GDP

The measure of a country's economic output adjusted for price changes (inflation or deflation), reflecting the real quantity of goods and services produced.

Military Spending

Financial allocation by a government for the maintenance and operation of armed forces, including expenses related to salaries, equipment, training, and facilities.