Respuesta :

The two factors that increase the size of a population are natality, which is the number of individuals that are added to the population over a period of time due to reproduction, and immigration, which is the migration of an individual into a place.

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The two factors that affect population size are natality, which is the number of individuals that are ended to the population over a period of time due to reproduction, and immigration and which is a migration of an individual to a place.