AP BIOLOGY

Detailed explanation-1: -Emigration is the movement of individuals out of a population. This decreases the population size and growth rate. Populations gain individuals through births and immigration. They lose individuals through deaths and emigration.

Detailed explanation-2: -Dispersal is an ecological process that involves the movement of an individual or multiple individuals away from the population in which they were born to another location, or population, where they will settle and reproduce. The two most common forms of dispersal are: natal or dispersal.

Detailed explanation-3: -Permanent emigration represents a loss of population in the place of origin. Whether this loss translates into a long-run reduction in population size depends on the age and sex composition of emigrant flows, and whether birth and survival rates rise in response to the loss of population.

Detailed explanation-4: -Emigrate means to leave one’s country to live in another. Immigrate is to come into another country to live permanently. Migrate is to move, like birds in the winter. The choice between emigrate, immigrate, and migrate depends on the sentence’s point of view.