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The horizontal fraction bar was introduced by the Arabs.

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For about 100 years, scientists thought that peptic ulcers were caused by stress, spicy food, and alcohol. Later, researchers added stomach acid to the list of causes and began treating ulcers with antacids. Now it is known that peptic ulcers are predominantly caused by Helicobacter pylori, a spiral-shaped bacterium that normally exist in the stomach.

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Long-term mental and physical effects from substance abuse include: paranoia, psychosis, immune deficiencies, and organ damage.

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In 2012, nearly 24 milliion Americans, aged 12 and older, had abused an illicit drug, according to the National Institute on Drug Abuse (NIDA).

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There are over 65,000 known species of protozoa. About 10,000 species are parasitic.

Arctic and alpine cushion plant form and orientation increases heat gain from sunlight and the surro Arctic and alpine cushion plant form and orientation increases heat gain from sunlight and the surro
GI endoscopy. (a) Similar to other forms of GI endoscopy, laparoscopy involves the insertion of a sp GI endoscopy. (a) Similar to other forms of GI endoscopy, laparoscopy involves the insertion of a sp
Example of an online employment application and posting of a résumé. Example of an online employment application and posting of a résumé.
How prefixes and suffixes can be combined with a word root to form many medical terms. How prefixes and suffixes can be combined with a word root to form many medical terms.
Client files are kept in alphabetical order in locked file cabinets. Client files are kept in alphabetical order in locked file cabinets.
Trace word recycle by sk kid Trace word recycle by sk kid
Video: Acid-base imbalances - compensation of respiratory acidosis and alkalosis

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