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Author Question: Natural, unpolluted rainwater is typically acidic. What is the source of this natural acidity? A) ... (Read 27 times) |
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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
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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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The highest suicide rate in the United States is among people ages 65 years and older. Almost 15% of people in this age group commit suicide every year.
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Blood is approximately twice as thick as water because of the cells and other components found in it.
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The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.