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Did you know?
The horizontal fraction bar was introduced by the Arabs.
Did you know?
Nitroglycerin is used to alleviate various heart-related conditions, and it is also the chief component of dynamite (but mixed in a solid clay base to stabilize it).
Did you know?
Blood is approximately twice as thick as water because of the cells and other components found in it.
Did you know?
There are approximately 3 million unintended pregnancies in the United States each year.
Did you know?
In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.