What keeps polar bears warm? Opposite of hotter? Listen to this short talk about polar bears. You may want to print this page to see the questions as you listen. Polar Bears True or false? You can check your answers at the end: a) Polar bears are left-handed. b) They are strong swimmers. c) They can smell seals from 20 metres. d) They can eat 10% of their body weight in 10 minutes. e) Many animals eat polar bears. f) Seven people have been killed by a polar bear in Canada in 30 years. Now check your answers here: