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Author Question: Oxygen exists as a single atom. (Read 22 times) |
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The average office desk has 400 times more bacteria on it than a toilet.
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Eating carrots will improve your eyesight. Carrots are high in vitamin A (retinol), which is essential for good vision. It can also be found in milk, cheese, egg yolks, and liver.
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The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.
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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
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This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.