What is "animal migration," and why does it occur?

Animal migration refers to the seasonal movement of animals from one region to another, typically in search of better breeding conditions or food availability. This behavior is crucial for various species, as it allows them to exploit resources that may be scarce in their original habitat during certain times of the year. For example, many bird species migrate to warmer areas in the winter to find food and return to breeding grounds in the spring when conditions are more favorable.

This movement is often driven by instinctual behaviors linked to environmental cues such as temperature changes, day length, and food supply. By migrating, animals can ensure their survival and reproductive success, making it a vital aspect of their life cycle.

The other choices don't accurately represent the primary concept of migration. While climate change can affect habitats, it is not the essence of migration itself. Migration does not occur solely as a response to human activities, and it certainly is not limited to domesticated animals; it is a natural phenomenon observed across many wildlife species in the animal kingdom. Thus, the correct response highlights the fundamental reasons behind animal migration.