The acid in your stomach is strong enough to dissolve razor blades.
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The human spine consists of 33 vertebrae.
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A sea anemone uses stinging cells to capture prey.
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An adult giraffe can clean its ears with its tongue.
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In 1920, a town in Minnesota briefly elected a bear as mayor in a publicity stunt.
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The human body glows faintly in complete darkness.
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Your bones are stronger than steel.
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The pacemaker regulates irregular heartbeats.
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