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Author Question: The measure of variability that reflects the difference between the largest and smallest scores in a ... (Read 46 times) |
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In 1835 it was discovered that a disease of silkworms known as muscardine could be transferred from one silkworm to another, and was caused by a fungus.
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The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.
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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
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In 1864, the first barbiturate (barbituric acid) was synthesized.
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Approximately 500,000 babies are born each year in the United States to teenage mothers.