The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.
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Serum cholesterol testing in adults is recommended every 1 to 5 years. People with diabetes and a family history of high cholesterol should be tested even more frequently.
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The highest suicide rate in the United States is among people ages 65 years and older. Almost 15% of people in this age group commit suicide every year.
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Approximately 500,000 babies are born each year in the United States to teenage mothers.
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Children of people with alcoholism are more inclined to drink alcohol or use hard drugs. In fact, they are 400 times more likely to use hard drugs than those who do not have a family history of alcohol addiction.
Evolutionary shift in plant life cycle stage dominance.