Question

what factor describes when populations decrease because animals are moving out of a population? emigration limiting factors exponential growth immigration

Explanation:

Emigration refers to the movement of individuals out of a population, which causes the population size to decrease. Limiting factors affect population growth in various ways but don't specifically describe movement out. Exponential growth is about rapid increase in population size. Immigration is the movement of individuals into a population.

Answer:

A. Emigration