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  2. Virginity - Wikipedia

    en.wikipedia.org/wiki/Virginity

    According to a 2011 CDC study, in the 15-to-19-year-old age group 43 percent of males and 48 percent of females in the United States reported never having an opposite-sex partner. [73] The rates of teenage pregnancy vary and range from 143 per 1000 girls in some sub-Saharan African countries to 2.9 per 1000 in South Korea.

  3. Pedophilia - Wikipedia

    en.wikipedia.org/wiki/Pedophilia

    Pedophilia ( alternatively spelled paedophilia) is a psychiatric disorder in which an adult or older adolescent experiences a primary or exclusive sexual attraction to prepubescent children. [1] [2] : vii Although girls typically begin the process of puberty at age 10 or 11, and boys at age 11 or 12, [3] psychiatric diagnostic criteria for ...

  4. Female genital mutilation - Wikipedia

    en.wikipedia.org/wiki/Female_genital_mutilation

    In surveys in 2002–2006, 30 percent of cut girls in Djibouti, 38 percent in Eritrea, and 63 percent in Somalia had experienced Type III. There is also a high prevalence of infibulation among girls in Niger and Senegal, and in 2013 it was estimated that in Nigeria three percent of the 0–14 age group had been infibulated.

  5. IQ classification - Wikipedia

    en.wikipedia.org/wiki/IQ_classification

    By the current "deviation IQ" definition of IQ test standard scores, about two-thirds of all test-takers obtain scores from 85 to 115, and about 5 percent of the population scores above 125 (i.e. normal distribution).

  6. Age of Earth - Wikipedia

    en.wikipedia.org/wiki/Age_of_Earth

    The age of Earth is estimated to be 4.54 ± 0.05 billion years ... Holmes' persistence finally began to pay off in 1921, ... 4.50 ± 0.07 billion years 3. Allende ...

  7. Intelligence quotient - Wikipedia

    en.wikipedia.org/wiki/Intelligence_quotient

    Age. IQ can change to some degree over the course of childhood. In one longitudinal study, the mean IQ scores of tests at ages 17 and 18 were correlated at r = 0.86 with the mean scores of tests at ages five, six, and seven and at r = 0.96 [further explanation needed] with the mean scores of tests at ages 11, 12, and 13.

  8. Dependency ratio - Wikipedia

    en.wikipedia.org/wiki/Dependency_ratio

    Dependency ratio. The dependency ratio is an age-population ratio of those typically not in the labor force (the dependent part ages 0 to 14 and 65+) and those typically in the labor force (the productive part ages 15 to 64). It is used to measure the pressure on the productive population. Consideration of the dependency ratio is essential for ...

  9. What the '2 percent' actually means in 2 percent milk — and ...

    www.aol.com/article/lifestyle/2017/10/30/what...

    Of that weight, 2% milk holds 5 grams of fat and whole milk contains 8 grams. So whole milk isn't much fattier than 2%. In fact, a gallon of 2% has more than half the fat as a gallon of whole milk ...