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The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.
Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.
Asthma cases in Americans are about 75% higher today than they were in 1980.
Although the Roman numeral for the number 4 has always been taught to have been "IV," according to historians, the ancient Romans probably used "IIII" most of the time. This is partially backed up by the fact that early grandfather clocks displayed IIII for the number 4 instead of IV. Early clockmakers apparently thought that the IIII balanced out the VIII (used for the number 8) on the clock face and that it just looked better.
In 1835 it was discovered that a disease of silkworms known as muscardine could be transferred from one silkworm to another, and was caused by a fungus.