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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
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Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.
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Eating carrots will improve your eyesight. Carrots are high in vitamin A (retinol), which is essential for good vision. It can also be found in milk, cheese, egg yolks, and liver.
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Atropine was named after the Greek goddess Atropos, the oldest and ugliest of the three sisters known as the Fates, who controlled the destiny of men.
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The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.