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Author Question: ____________________ is a type of mental retardation caused by a problem with the 21st chromosomes. ... (Read 53 times) |
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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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In 1844, Charles Goodyear obtained the first patent for a rubber condom.
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The horizontal fraction bar was introduced by the Arabs.
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Nearly all drugs pass into human breast milk. How often a drug is taken influences the amount of drug that will pass into the milk. Medications taken 30 to 60 minutes before breastfeeding are likely to be at peak blood levels when the baby is nursing.
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More than 4.4billion prescriptions were dispensed within the United States in 2016.