The human body produces and destroys 15 million blood cells every second.
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Your heart beats over 36 million times a year.
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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.
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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.
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In most cases, kidneys can recover from almost complete loss of function, such as in acute kidney (renal) failure.
Controlled Experiments Manipulate a Variable
A visual inspection on this battery showed that the electrolyte level was below the plates in all ...
The fuel level must be above 15% and below 85% before the EVAP monitor will run on most vehicles.
A weather map depicting the sea-level pressure distribution for March 4, 1994.