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Did you know?
Adolescents often feel clumsy during puberty because during this time of development, their hands and feet grow faster than their arms and legs do. The body is therefore out of proportion. One out of five adolescents actually experiences growing pains during this period.
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?
About 100 new prescription or over-the-counter drugs come into the U.S. market every year.
Did you know?
The horizontal fraction bar was introduced by the Arabs.
Did you know?
Earwax has antimicrobial properties that reduce the viability of bacteria and fungus in the human ear.