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Author Question: The half-moon-shaped valves are the ________ and the ________. (Read 42 times) |
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All adults should have their cholesterol levels checked once every 5 years. During 2009–2010, 69.4% of Americans age 20 and older reported having their cholesterol checked within the last five years.
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The average office desk has 400 times more bacteria on it than a toilet.
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Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.
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Earwax has antimicrobial properties that reduce the viability of bacteria and fungus in the human ear.
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More than one-third of adult Americans are obese. Diseases that kill the largest number of people annually, such as heart disease, cancer, diabetes, stroke, and hypertension, can be attributed to diet.