Your taste buds are replaced every 10 days.
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Saber-toothed cats had elongated canine teeth.
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Polar bears have a thick layer of fat to retain body heat.
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The human skeleton is made up of over 200 bones in adulthood.
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A narwhal’s tusk is actually an elongated tooth.
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The human brain operates on about 20 watts of power.
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The FIFA World Cup is held every four years.
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The first successful heart transplant was performed in 1967.
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