How does warmer climate affect polar bears ability to live?

Because of climate change it’s making their habitat melt.. polar bears live in water & in the cold if their habitat keeps melting it will eventually start going down to Miami & it will be under water within a couple centuries.. but pollution is a big cause of climate change that’s why some places use satellite to get energy from the sun because climate change causes the earth to get warmer or the weather to change in places that doesn’t have that weather anyways they live in the cold they aren’t prepared for heat