|
|
Did you know?
During the twentieth century, a variant of the metric system was used in Russia and France in which the base unit of mass was the tonne. Instead of kilograms, this system used millitonnes (mt).
Did you know?
Approximately 25% of all reported medication errors result from some kind of name confusion.
Did you know?
Human kidneys will clean about 1 million gallons of blood in an average lifetime.
Did you know?
The horizontal fraction bar was introduced by the Arabs.
Did you know?
This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.