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Read an Academic Passage
The Phenomenon of Animal Migration
Animal migration is a natural process characterized by the seasonal movement of animals from one region to another. This behavior is most common in birds, fish, and mammals, and is typically a response to changes in climate, food availability, or habitat. The primary driver for migration is survival, as animals move to areas where they can find sufficient resources and suitable conditions for breeding. For instance, many bird species fly south for the winter to escape cold temperatures and find more abundant food sources.
The mechanisms behind migration are complex and not fully understood. Animals appear to possess an innate ability to navigate vast distances with remarkable accuracy. They use a variety of cues, including the Earth's magnetic field, the position of the sun and stars, and even their sense of smell. These journeys are often arduous, requiring immense energy and exposing the animals to numerous dangers such as predators and harsh weather. For example, the Arctic tern undertakes the longest known migration, traveling from the Arctic to the Antarctic and back each year.
However, this ancient pattern of movement is facing modern threats. Human activities, such as the construction of dams and buildings, can obstruct migratory routes. Habitat destruction in both their summer and wintering grounds reduces the availability of essential resources, further endangering these populations. Conservation efforts are now focused on protecting these critical habitats and corridors to ensure that migratory species can continue their vital journeys, which are essential for maintaining ecological balance.
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