There is no evidence that they have adapted. Polar bears now have to spend more time on land, during the lengthening summers, where they can no longer hunt for seals, their main food source. There are reports that they are competing with land bears for food, with little success.
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They haven't. Polar bears are now a threatened species. If the polar ice cap goes, then so do the polar bears, as they rely on oceanic ice to secure their food.
An ice cap is ice over land. There is no ice cap in the Arctic. Arctic sea ice is melting, however, more and more each year, and this is threatening the existence of the polar bears who rely on the habitat of sea ice to build up their store of body fat to last them through the (lengthening) summers.
The temperature extremities, both hot and cold, will extend, causing non-adapted creatures to die. Also, the polar ice cap is melting, causing an increase in sea level, possibly flooding some cities along the coast.
A lot of animal live on iceberg like seals, penguins seabirds. There are something that live in side that are snow fleas, ice worms miles sea ice nematodes and some types of spiders. They eat pollen ,microscopic matter and algae
The melting ice caps are located in polar regions such as the Arctic and Antarctic. Melting ice caps contribute to rising sea levels and are a clear indicator of global climate change.