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Author Question: Which of the following has emerged as one of the most pressing challenges of the early 21st century? (Read 181 times) |
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People about to have surgery must tell their health care providers about all supplements they take.
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Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.
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During the twentieth century, a variant of the metric system was used in Russia and France in which the base unit of mass was the tonne. Instead of kilograms, this system used millitonnes (mt).
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Hyperthyroidism leads to an increased rate of metabolism and affects about 1% of women but only 0.1% of men. For most people, this increased metabolic rate causes the thyroid gland to become enlarged (known as a goiter).
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If you could remove all of your skin, it would weigh up to 5 pounds.