Final answer:
The elongated head and body of a polar bear help it to maintain body temperature, catch prey more easily, and swim efficiently.
Step-by-step explanation:
The elongated head and body of a polar bear help it to survive in several ways. Firstly, the elongated body helps the polar bear to maintain an efficient body temperature by reducing heat loss. Secondly, the elongated head allows the polar bear to reach into the water and catch prey more easily. Lastly, the elongated body helps the polar bear to swim through water more efficiently, enabling it to cover longer distances and reach new hunting grounds.
Learn more about Polar bear adaptation