SCIENCE
ECOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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competition for resources
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predation
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disease
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natural disasters
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Detailed explanation-1: -The factors that affect population density are birth rate, death rate and dispersal.
Detailed explanation-2: -Density-dependent factors include disease, competition, and predation.
Detailed explanation-3: -In density dependent disease transmission contact rates increase as density increases, therefore disease transmission also increases. Frequency dependent disease transmission occurs when there is no relationship between contact rates (or transmission events) and density of a population.
Detailed explanation-4: -Answer and Explanation: Diseases are considered as density-dependent factors because diseases can only spread if the organisms live in close proximity to one another i.e. the population of the organisms should be dense.
Detailed explanation-5: -Competition within the population. When a population reaches a high density, there are more individuals trying to use the same quantity of resources. Predation. Disease and parasites. Waste accumulation.