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The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.
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Though the United States has largely rejected the metric system, it is used for currency, as in 100 pennies = 1 dollar. Previously, the British currency system was used, with measurements such as 12 pence to the shilling, and 20 shillings to the pound.
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All adverse reactions are commonly charted in red ink in the patient's record and usually are noted on the front of the chart. Failure to follow correct documentation procedures may result in malpractice lawsuits.
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Vaccines prevent between 2.5 and 4 million deaths every year.
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Patients who cannot swallow may receive nutrition via a parenteral route—usually, a catheter is inserted through the chest into a large vein going into the heart.
![A plot of trophic diversity across the major groups of organisms shows highest trophic diversity amo](https://biology-forums.com/gallery/47/medium_33_09_09_11_10_15_38_17201332.jpeg)
![The geomagnetic polarity time scale shows how Earth’s magnetic pole has changed through geologic tim](https://biology-forums.com/gallery/47/medium_274477_04_02_15_12_24_31_20573922.jpeg)