The average adult has about 21 square feet of skin.
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Every 10 seconds, a person in the United States goes to the emergency room complaining of head pain. About 1.2 million visits are for acute migraine attacks.
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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
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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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Warfarin was developed as a consequence of the study of a strange bleeding disorder that suddenly occurred in cattle on the northern prairies of the United States in the early 1900s.
Typical container for the disposal of broken glass or other sharps.
How to integrate using inverse trigonometric substitution (Question 5)
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economic question
economic question
Which color is placed at the center of the circle?