Give a teleological explanation of why polar bears
have white fur?

According to Lipton, a statement that “the function of the polar bear's white fur is camouflage” is not teleological because it is simply meant to explain that natural selection has acted in such a way that, due to camouflage, whiter individuals have a greater chance to catch prey and thus survive.

Explanation:

“the iliad” (gr: “iliás”) is an epic poem by the ancient greek poet homer, which recounts some of the significant events of the final weeks of the trojan war and the greek siege of the city of troy (which was also known as ilion, ilios or ilium in ancient times).