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Author Question: A camera has a converging lens with a focal length of 56 mm. If the f-number is 2.8, what is the ... (Read 59 times) |
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More than 30% of American adults, and about 12% of children utilize health care approaches that were developed outside of conventional medicine.
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Between 1999 and 2012, American adults with high total cholesterol decreased from 18.3% to 12.9%
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Only one in 10 cancer deaths is caused by the primary tumor. The vast majority of cancer mortality is caused by cells breaking away from the main tumor and metastasizing to other parts of the body, such as the brain, bones, or liver.
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Warfarin was developed as a consequence of the study of a strange bleeding disorder that suddenly occurred in cattle on the northern prairies of the United States in the early 1900s.
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The average office desk has 400 times more bacteria on it than a toilet.