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Did you know?
The familiar sounds of your heart are made by the heart's valves as they open and close.
Did you know?
The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.
Did you know?
The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.
Did you know?
Everyone has one nostril that is larger than the other.
Did you know?
Never take aspirin without food because it is likely to irritate your stomach. Never give aspirin to children under age 12. Overdoses of aspirin have the potential to cause deafness.

