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Question
Which of the following would necessarily decrease the density of a population in a given habitat?
Which of the following would necessarily decrease the density of a population in a given habitat?
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Solution
The correct option is C Mortality and emigration
The decrease of population in a habitat depends on two factors - mortality rate and emigration.
Mortality rate or death rate is the average number of individuals which die per unit time.
Emigration is similar to mortality, but there is no death; it is the permanent departure of some persons from an existing population to another state or country.
Mortality and emigration
The decrease of population in a habitat depends on two factors - mortality rate and emigration.
Mortality rate or death rate is the average number of individuals which die per unit time.
Emigration is similar to mortality, but there is no death; it is the permanent departure of some persons from an existing population to another state or country.
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