What mechanism explains why polar bears are white and bears found farther south have a darker color?

Answer 1

Since Polar bears live in arctic climates surrounded by ice and snow, over the years white fur was naturally selected in their population as a dominant trait that gave a competitive advantage. White Polar bears blend in more easily with their surroundings, enabling them to sneak up on their prey and make hunting easier. Non-white Polar bears eventually became extinct because of this hunting disadvantage. millmillhot321:well,actually their fur is actually not colored. their fur is see-through. it's like a little tube. it's white because of the sun. look up Polar Bears, a book on polar bears that's where i learend it.

Answer 2

1. the fur is actually transparent optical fiber that carries light directly to the bear's black skin, helping to keep it warm
2. camouflage to make the bear hard to see in the snow and ice

Answer 3

Correction:

Polar bear's fur is white but their skin is black.

The reason why polar bear's fur is white because it helps them camouflage with snow.

Answer 4

They are able to hide in the environment because they blend in.

Answer 5

Natural selection

Answer 6

Natural Selection