The permanent decrease in population number o | vedclass

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(D) Mortality refers to the death rate,which is the number of deaths per thousand individuals in a population per unit of time.It is a primary factor

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Mortality

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(D) Mortality refers to the death rate,which is the number of deaths per thousand individuals in a population per unit of time.It is a primary factor that leads to a permanent decrease in the total population size and population density.While emigration also causes a decrease,mortality is the fundamental biological process of death that reduces the population number.

The permanent decrease in population number occurs due to:

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