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Although puberty usually occurs in the early teenage years, the world's youngest parents were two Chinese children who had their first baby when they were 8 and 9 years of age.
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Asthma cases in Americans are about 75% higher today than they were in 1980.
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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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The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.
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Your chance of developing a kidney stone is 1 in 10. In recent years, approximately 3.7 million people in the United States were diagnosed with a kidney disease.