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- “Polar bears have adapted to their cold Artic environment. Their fur has hollow hairs filled with air, which provides insulation so that they can live on the ice and swim in the freezing water. Since polar bears spend much of their time in the sea, they have webbed front paws to help them swim.”
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- Slide Set on Untitled, created by Sistemas ELS on 24/08/2018.
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- Sistemas ELS
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