Which of the Following is Most Likely to Contribute to Density-Dependent

Question

Which of the following is most likely to contribute to density-dependent regulation of populations?
A) the removal of toxic waste by decomposers
B) intraspecific competition for nutrients
C) earthquakes
D) floods
E) fires

Accepted Answer

Intraspecific competition for nutrients is a classic example of a density-dependent factor that can regulate populations. As the population density increases, individuals have to compete for limited resources such as food, water, and space. This can lead to reduced growth rates, increased mortality rates, or changes in behavior that can help reduce competition (e.g. territoriality, migration). The other options listed are not likely to have a direct impact on population density or are more related to disturbances or environmental processes that can affect populations, but not necessarily regulate them.