what problems will a polar bear have if it is left in a desert

Since the normal habitat of a polar bear is cold regions it would die of heat stroke in the desert and also polar bears have blubber for insulation and this would cause further heating of their bodies and eventual death. They would also die of starvation and thirst as there would be no fishes in the desert along with a shortage of water. Polar bears won’t be adapted for such a harsh and completely different habitat as compared to their natural habitat.