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Did you know?
On average, the stomach produces 2 L of hydrochloric acid per day.
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?
The familiar sounds of your heart are made by the heart's valves as they open and close.
Did you know?
There are approximately 3 million unintended pregnancies in the United States each year.