They need food in order to survive.
They won't. They need to live and survive in the Arctic, not the mountains. Polar bears don't live in the mountains anyway.
Polar bears need to survive with water, food, nutrients, and they are fur to stay warm
Yes they do need fur to be kept warm.
Because they need to eat and drink to survive.
Like any animal, bears need food, water, shelter, and the ability to securely raise their young.
Bears in general, need to put on enough body fat during Autumn, so as to survive the winter hibernation.
Deers, beavers, bears, wolves, rabbits, foxes.
Definitely. All mammals do, for sure. All living creatures need it to survive
Bears in general, need to put on enough body fat during Autumn, so as to survive the winter hibernation.
because they need warmth to survive and fat on their legs keeps their legs warm
Every living creature needs water to survive, so in that sense, yes. They also need water for food, because that is where their main source comes from. But they will not die if they don't swim.