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Did you know?
Pope Sylvester II tried to introduce Arabic numbers into Europe between the years 999 and 1003, but their use did not catch on for a few more centuries, and Roman numerals continued to be the primary number system.
Did you know?
The training of an anesthesiologist typically requires four years of college, 4 years of medical school, 1 year of internship, and 3 years of residency.
Did you know?
The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
Did you know?
It is difficult to obtain enough calcium without consuming milk or other dairy foods.
Did you know?
On average, the stomach produces 2 L of hydrochloric acid per day.