Final answer:
Polar bears are adapted to the Arctic's cold environment with thick fur and fat layers, primarily hunt seals, and are threatened by climate change due to melting sea ice.
Step-by-step explanation:
From the fact that polar bears live in the Arctic, you can conclude that polar bears are adapted to survive in cold environments. These adaptations include generating their own heat and reducing heat loss through thick fur and a dense layer of fat under their skin, known as blubber. Their white fur acts as camouflage against the snow and ice, which is crucial for hunting their primary prey, seals. The assumption that polar bears are not affected by climate change is incorrect; polar bears are indeed threatened by the melting of sea ice due to global warming, which impairs their ability to hunt.
Polar bears primarily feed on seals, relying on the sea ice as a platform from which to catch their prey. As the sea ice melts, polar bears are forced to travel further and face greater challenges in finding food, highlighting the impact of climate change on their species. The notion that polar bears are found in other regions besides the Arctic is not relevant to their adaptation to cold conditions, and neither is the idea that they primarily eat fish, as seals are their main dietary source.