The phrase “riddle I make polar bears white” is often used to describe the phenomenon of countershading, a form of camouflage in which animals have a dark back and a light belly. This helps them to blend in with their surroundings and avoid predators. Countershading is found in many animals, including polar bears, zebras, and rabbits.
Countershading is thought to have evolved as a way to help animals survive in their environment. For example, polar bears live in the Arctic, where there is a lot of snow and ice. Their white fur helps them to blend in with the snow and avoid being seen by predators. Zebras live in Africa, where there is a lot of tall grass. Their black and white stripes help them to blend in with the grass and avoid being seen by lions and other predators.