Question

Why are competition, predation, herbivory, parasitism, disease, and stress from
overcrowding density-dependent limiting factors?​

Answer 1

They are all sources of potential population depletion or death, and they can prohibit growth of a species.

Answer 2

Density-dependent factors include disease, competition, and predation and others.

Density-dependant factors can have either a positive or a negative correlation to population size.

• competition, predation, parasitism, disease, natural disasters, and unusual weather

• With a positive relationship, these limiting factors increase with the size of the population and limit growth as population size increases

• Parasitism and disease are density-dependent effects, because the denser the host population, the more easily parasites can spread from one host to another.

Thus, all the given factors are responsible for the decrease and increase of the population density.

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