The human eye can adapt to low-light conditions.
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Some animals can regenerate entire body parts.
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The Earth's core generates geothermal heat.
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The Earth completes one full rotation approximately every 24 hours.
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Certain parrots can learn to mimic human speech.
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The human brain operates on about 20 watts of power.
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The human brain weighs about three pounds on average.
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A polar bear's fur is actually transparent.
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Ants do not have lungs and breathe through small openings in their bodies.
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