6. Match the two parts of the sentences. Left: 1) Polar bears hunt for prey; 2) They are taller and heavier; 3) They are camouflaged in the snow; 4) Their habitats are threatened; 5) Penguins are excellent swimmers; 6) They can’t fly; 7) Their black and white feathers; 8) Pollution is causing. Right: a) by climate change; b) due to their body shape; c) their prey to disappear; d) although they are birds; e) than men; f) on the ice; g) by their white fur; h) hide them from predators.