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Did you know?
The horizontal fraction bar was introduced by the Arabs.
Did you know?
Excessive alcohol use costs the country approximately $235 billion every year.
Did you know?
Asthma cases in Americans are about 75% higher today than they were in 1980.
Did you know?
Autoimmune diseases occur when the immune system destroys its own healthy tissues. When this occurs, white blood cells cannot distinguish between pathogens and normal cells.
Did you know?
More than 34,000 trademarked medication names and more than 10,000 generic medication names are in use in the United States.

