What are some factors affecting migration?

Answer

Migration is generally defined as the movement of animals from one area to another. There are two main factors affecting migration. One is the variation in climate, and the other is food availability. For example, in the northern states when the weather turns colder birds will fly south where the climate is warmer. Another example is in Africa the animals on the savannahs will migrate to another area when their food source has been depleted. Breeding habits may also cause animals to migrate.
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