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On average, the stomach produces 2 L of hydrochloric acid per day.
There used to be a metric calendar, as well as metric clocks. The metric calendar, or "French Republican Calendar" divided the year into 12 months, but each month was divided into three 10-day weeks. Each day had 10 decimal hours. Each hour had 100 decimal minutes. Due to lack of popularity, the metric clocks and calendars were ended in 1795, three years after they had been first marketed.
Urine turns bright yellow if larger than normal amounts of certain substances are consumed; one of these substances is asparagus.
Although puberty usually occurs in the early teenage years, the world's youngest parents were two Chinese children who had their first baby when they were 8 and 9 years of age.
Approximately 500,000 babies are born each year in the United States to teenage mothers.