Density-independent factors that regulate population size include all of the following EXCEPT:
A) drought
B) severe storms
C) supply of food
D) fire in a grassland biome
E) extreme cold, or moderate cold at an especially critical time of year

Question

Quizplus · Accepted Answer

Density-independent factors are environmental factors that can affect a population regardless of its size, and they do not depend on the density of the population. Drought, severe storms, fire, and extreme or moderate cold are examples of density-independent factors because they have the potential to affect a population regardless of how large or small it is. However, the supply of food is a density-dependent factor because it does depend on the size of the population. As a population grows, the demand for food increases, which can lead to competition for resources and affect population growth and size.

Density-Independent Factors That Regulate Population Size Include All of the Following