What makes polar bears strong swimmers?

Polar bears are clad with thick, waterproof fur and their feet are partly-webbed. It is these features that make them strong swimmers. Their fur and feet help them to swim long distances through the icy waters of the Arctic.

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How does a frog jump?

A frog has large webbed feet. It jumps by lifting the front legs and at the same time pushing the ground with its hind legs. This pressure opens the webs, which provides a firm base to jump. It lands on its front legs and gathers its hind legs.

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