Final answer:
Migration is the movement of individuals from occupied patches to unoccupied patches to form new local populations.
Step-by-step explanation:
Migration is the movement of individuals from occupied patches (existing local populations) to unoccupied patches to form new local populations. It is a common phenomenon observed in various species, including humans and animals.
For example, northern hemisphere birds migrate thousands of miles south each fall to find warmer weather and more resources. This movement helps to increase population size and allows individuals to find food, mates, and other resources.