Which Factor is a Population-Limiting, Density-Dependent Factor

Question

Which factor is a population-limiting, density-dependent factor?
A) a heavy flood that destroys a large area around a river
B) a heat wave in which some organisms can't survive
C) a drought that limits food availability
D) the rapid spread of tuberculosis in heavily populated areas

Accepted Answer

Density-dependent factors are those that affect populations more significantly when the population density is high. The rapid spread of tuberculosis in heavily populated areas is a classic example of a density-dependent factor because the disease spreads more easily when individuals are in close contact with each other, which is more likely in densely populated areas.