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Adolescents often feel clumsy during puberty because during this time of development, their hands and feet grow faster than their arms and legs do. The body is therefore out of proportion. One out of five adolescents actually experiences growing pains during this period.

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Despite claims by manufacturers, the supplement known as Ginkgo biloba was shown in a study of more than 3,000 participants to be ineffective in reducing development of dementia and Alzheimer’s disease in older people.

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Pope Sylvester II tried to introduce Arabic numbers into Europe between the years 999 and 1003, but their use did not catch on for a few more centuries, and Roman numerals continued to be the primary number system.

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Aspirin is the most widely used drug in the world. It has even been recognized as such by the Guinness Book of World Records.

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Before a vaccine is licensed in the USA, the Food and Drug Administration (FDA) reviews it for safety and effectiveness. The CDC then reviews all studies again, as well as the American Academy of Pediatrics and the American Academy of Family Physicians. Every lot of vaccine is tested before administration to the public, and the FDA regularly inspects vaccine manufacturers' facilities.

Negative control of an inducible set of genes: function of the lac repressor in regulating the lac o Negative control of an inducible set of genes: function of the lac repressor in regulating the lac o
Change in Emotional States During Adolescence Average emotional state becomes teadilyi more negativ Change in Emotional States During Adolescence Average emotional state becomes teadilyi more negativ
The tension of the spring in the fuel-pressure regulator determines the operating pressure on a ... The tension of the spring in the fuel-pressure regulator determines the operating pressure on a ...
Apply the heat source, and ask for immediate feedback on the heat intensity felt by the recipient. ... Apply the heat source, and ask for immediate feedback on the heat intensity felt by the recipient. ...
Regulation of the mammalian pyruvate dehydrogenase by feedback inhibition and covalent modification ... Regulation of the mammalian pyruvate dehydrogenase by feedback inhibition and covalent modification ...
The cell wall of a Gram-negative bacterium, E. coli The cell wall of a Gram-negative bacterium, E. coli
Video: Brain Anatomy Animation (Part 1 of 2)

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