EVERYDAY SCIENCE

SCIENCE

ECOLOGY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which factor is a density-dependent limiting factor on the population of a species?
A
seasonal variation
B
natural disasters
C
unusual weather
D
predation
Explanation: 

Detailed explanation-1: -Density-dependent limiting factors tend to be biotic-having to do with living organisms. Competition and predation are two important examples of density-dependent factors.

Detailed explanation-2: -Density-dependent factors include disease, competition, and predation.

Detailed explanation-3: -A second density-dependent limiting factor is predation. Predators kill and eat their prey, of course, so predation increases prey death rate and can cause negative growth rates – population decline.

Detailed explanation-4: -A density-dependent factor is a factor whose effects on the size or growth of a population vary with the population density. Density-dependent factors typically involve biotic factors, such as the availability of food, parasitism, predation, disease, and migration.

Detailed explanation-5: -density-independent factor, also called limiting factor, in ecology, any force that affects the size of a population of living things regardless of the density of the population (the number of individuals per unit area).

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