What are the aspects that change the size of population?
A
Birth and migration
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B
Birth, death and dispersal
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C
Birth, death and immigration
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D
Birth, death and emigration
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Solution
The correct option is B
Birth, death and dispersal
Births increase the size of the population and deaths decrease the size of the population. Dispersal, that is immigration and emigration where individuals either move into a population or move out of a population also changes the size of the population.