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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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Pope Sylvester II tried to introduce Arabic numbers into Europe between the years 999 and 1003, but their use did not catch on for a few more centuries, and Roman numerals continued to be the primary number system.

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Human kidneys will clean about 1 million gallons of blood in an average lifetime.

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The Babylonians wrote numbers in a system that used 60 as the base value rather than the number 10. They did not have a symbol for "zero."

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Approximately 500,000 babies are born each year in the United States to teenage mothers.

Effective listening skills demonstrate empathy to the patient and break down barriers to communicati Effective listening skills demonstrate empathy to the patient and break down barriers to communicati
How difficult is it for children to learn to speak two languages? How difficult is it for children to learn to speak two languages?
Active Compared with Passive Voice Active Compared with Passive Voice
Listening to the fetal heartbeat with a Doppler device. Listening to the fetal heartbeat with a Doppler device.
A reverse passive agglutination reaction. The antibody is bound to the particles, and antigen in the ... A reverse passive agglutination reaction. The antibody is bound to the particles, and antigen in the ...
Passive Continental Margin Passive Continental Margin
Video: Anatomy and Chemical Makeup of a Single Hair (Animation)

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