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Author Question: In an experiment, a researcher manipulates one variable to see how it affects a second variable. The ... (Read 135 times) |
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The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.
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Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.
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One way to reduce acid reflux is to lose two or three pounds. Most people lose weight in the belly area first when they increase exercise, meaning that heartburn can be reduced quickly by this method.
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About 600,000 particles of skin are shed every hour by each human. If you live to age 70 years, you have shed 105 pounds of dead skin.
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Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.