Polar bears have a thick layer of (black) fur under their white fur to keep them warm. They have keen senses of smell and can smell a meal over a mile away. Their white fur helps them to blend in with the snow. They also have feet better adapted to swimming.
Because the adaptations that get established are a consequence of the environment. Any other adaptations that "do not fit the environment" get discarded via natural selection.
The Kodiak bear has several physical and behavioral adaptations to survive in its environment. These include a thick fur coat for insulation, large paws for swimming and catching prey, a strong sense of smell to locate food, and hibernation during winter to conserve energy when food is scarce.
With its adaptations like:Lots of thick furA large layer of fat or blubberRounded ears so water won't get in and freeze their eardrumsWhite fur for camoflouge
There is no such animal as a Sahara bear. In fact, the only bear that once lived in Africa, the Atlas bear, is thought to be extinct.
It depends...
None at all. The koala is not a bear; nor does it live in Africa; nor can it survive in grasslands.See the related question for what adaptations a koala has.
Hollow, insulating fur and webbed feet are two functional adaptations of Polar bears.
*Humans *Their prey
they are both polarised
The water millipede has adaptations like gills for breathing underwater, a streamlined body for swimming, and specialized legs for moving in water. These adaptations help it thrive in its aquatic environment.
They're adaptations are their strips because it helps them blend in with their group or pack.
It helps them blend into their environment.