The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.
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Vaccines prevent between 2.5 and 4 million deaths every year.
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Women are two-thirds more likely than men to develop irritable bowel syndrome. This may be attributable to hormonal changes related to their menstrual cycles.
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In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.
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More than 4.4billion prescriptions were dispensed within the United States in 2016.
Origin of the plant life cycle.
The nonionic form does not occur in significant amounts in aqueous solutions
The cardiac cycle showing systole and diastole.
By 2100, significant change will be in the far northern latitudes, parts of Asia, and Sub-Saharan
Life cycle of a T-even bacteriophage, as known in 1952