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Author Question: Your sister Ellen has just joined the Peace Corps and will be working on ways to improve the ... (Read 42 times) |
Did you know?
If you could remove all of your skin, it would weigh up to 5 pounds.
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Vampire bats have a natural anticoagulant in their saliva that permits continuous bleeding after they painlessly open a wound with their incisors. This capillary blood does not cause any significant blood loss to their victims.
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Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.
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The average adult has about 21 square feet of skin.
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In 1844, Charles Goodyear obtained the first patent for a rubber condom.