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Did you know?
The familiar sounds of your heart are made by the heart's valves as they open and close.
Did you know?
Excessive alcohol use costs the country approximately $235 billion every year.
Did you know?
The horizontal fraction bar was introduced by the Arabs.
Did you know?
More than 30% of American adults, and about 12% of children utilize health care approaches that were developed outside of conventional medicine.
Did you know?
The average office desk has 400 times more bacteria on it than a toilet.