Question

Which of the following is not a density-dependent factor?

• A. Birth rates
• B. Death rates
• C. Dispersal
• D. Natural disasters

Answer 1

The correct option is D

Natural disasters

The density-dependent factors are factors whose effects on the size or growth of the population vary with the population density. There are many types of density-dependent limiting factors such as; availability of food, predation, disease, and migration. However, the main factor is the availability of food. Birth rates, death rates and dispersal, i.e. immigration and emigration are factors on which population density depends on.