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Author Question: ________ are positive trends in external environmental factors, while ________ are negative trends. (Read 43 times) |
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There are more nerve cells in one human brain than there are stars in the Milky Way.
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In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.
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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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The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.
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Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.