Answer:
The polar bears which live in the tundra are not as omnivorous as the polar bears of the temperate forest because there are lesser plants and trees to be seen in the tundra region. The polar bears of the tundra are white in colour so that they can camouflage with the snow which is an adaptation for them to hide from their predators. The polar bears also have thick layers of fat which help to keep them warm as the temperature is very cold in these regions.
The choice of diet is important for organisms because an organism will be able to survive in an environment only if it has enough food sources to survive in a particular area. Hence, an organism should have the adaptation to feed on the sources of food available in an area in order to survive in the area.