The movement of organisms out of a range is called A. immigration.

The movement of organisms out of a range is called

A. immigration.

B. emigration.

C. population shift.

D. carrying capacity.

Answer. B. emigration.

In ecology, emigration is one of the forms of the organisms’ movement, which practically leads to a decrease in the population’s size in the given territory or zone. It is one of the four key components of population change alongside the immigration, birth rate, and death rate. Migration may be from a variety of causes ranging from lack of resources, deforestation, densities, or the need to find better breeding grounds. This outward movement accruing with gene flow between the populations is important as it may help support vigour genetically. These concepts are related to immigration, or the phenomenon of inward movement; population change, or the change in population composition; and carrying capacity, which refers to the maximum number of organisms that an environment can support.