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Fins and Fingers, Wings and HOOVES

Your arms and legs don't look like wings or fins. But the bones that make up arms and legs, fins, flippers, and wings all follow the same pattern.

Then, how is it that animals that look very different on the outside look very similar on the inside?

Animals with limbs use them to move around and to move things around. Humans and other primates use hands to grasp tools and food. Dolphins use flippers and tails to cruise gracefully and efficiently through the water, pivoting in an instant to check out potential threats or meals. Horses run on strong legs and tough hooves that work like shock absorbers, cushioning their joints on rough terrain at any speed. Hawks use their powerful wings to ...

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