A Scientist Is Studying a Population of Kangaroo Rats in the Southwestern

question 14

Multiple Choice

A scientist is studying a population of kangaroo rats in the southwestern deserts of the United States. For approximately 4 years the population remains at or near 125 individuals. In the fifth year, it falls to 30. This sharp decrease in population size is most likely the result of density-_____ factors.

• A)dependent
• B)independent

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Definitions:

Testing Effect

An educational phenomenon where repeated testing on material leads to better memory retention than through study methods alone.

Alcohol

A psychoactive substance found in beverages like beer, wine, and spirits, known for its intoxicating effects on the human body.

Driving Performance

The evaluation of how effectively a person operates a vehicle, often considering factors like speed, accuracy, and safety.

Obstacle Course

A series of challenging physical barriers that an individual or team must navigate usually as a form of training or competitive sport.