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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Approximately 15–25% of recognized pregnancies end in miscarriage. However, many miscarriages often occur before a woman even knows she is pregnant.
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Malaria mortality rates are falling. Increased malaria prevention and control measures have greatly improved these rates. Since 2000, malaria mortality rates have fallen globally by 60% among all age groups, and by 65% among children under age 5.
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The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.
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There are 60,000 miles of blood vessels in every adult human.
Numeric Color-Coding Systems
How to integrate using inverse trigonometric substitution (Question 1)