This list of questions actually came from a school in Port Vila, Vanuatu. There are absolutely no Polar bears in Antarctica. Take a look at the stations section. They will give you a fair idea about what is going on there. The lowest temperature in Antarctica, and the world, of minus 89.2 degrees C was recorded at the Russian Vostok Station in 1983.
People eat pretty much the same things that they eat at home in Australia.
Such as potatoes, chicken, beef, ice cream, etc. All the good stuff. One thing to remember though is that it all has to go in during summer and is frozen to last for winter. We also have hydroponics in hot house conditions to grow a few fresh vegetables like lettuce and tomatoes. More information about food.