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.

Question

Quizplus · Accepted Answer

Independent factors refer to external factors such as natural disasters, climate change or human activities that affect a population regardless of its size. The sudden drop in the kangaroo rat population is likely due to factors such as drought or predator populations, which may not be directly related to the number of individuals in the population. Hence, independent factors are the best explanation.

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