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Did you know?
The horizontal fraction bar was introduced by the Arabs.
Did you know?
The human body produces and destroys 15 million blood cells every second.
Did you know?
Asthma cases in Americans are about 75% higher today than they were in 1980.
Did you know?
Stroke kills people from all ethnic backgrounds, but the people at highest risk for fatal strokes are: black men, black women, Asian men, white men, and white women.
Did you know?
Russia has the highest death rate from cardiovascular disease followed by the Ukraine, Romania, Hungary, and Poland.