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Author Question: The most distant stars we can currently measure stellar parallax for are approximately A) in the ... (Read 23 times) |
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Human neurons are so small that they require a microscope in order to be seen. However, some neurons can be up to 3 feet long, such as those that extend from the spinal cord to the toes.
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Cyanide works by making the human body unable to use oxygen.
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The FDA recognizes 118 routes of administration.
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In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.
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Astigmatism is the most common vision problem. It may accompany nearsightedness or farsightedness. It is usually caused by an irregularly shaped cornea, but sometimes it is the result of an irregularly shaped lens. Either type can be corrected by eyeglasses, contact lenses, or refractive surgery.