Re: All New concept of Marriage, 2 in 1
Really???:
‘The human sex ratio is of particular interest to anthropologists and demographers. In humans the secondary sex ratio is commonly assumed to be **105 boys to 100 girls **(which sometimes is shortened to “a ratio of 105”). In human societies, however, sex ratios at birth or among infants may be considerably skewed by sex-selective abortion. The CIA estimates that the current world wide sex ratio at birth is 107 boys to 100 girls.’
‘The natural sex ratio at birth is estimated to be close to 1.1 males/female. Due to the generally higher life expectancy of females, sex ratio tends to even out in adult population, and result in an excess of females among the elderly (e.g., the male to female ratio falls from 1.05 for the group aged 15 to 65 to 0.70 for the group over 65 in Germany, from 1.00 to 0.72 in the USA, from 1.06 to 0.91 in mainland China and from 1.07 to 1.02 in India).’
**‘The value for the entire world population is 1.01 males/female, with 1.07 at birth, 1.06 for those under 15, 1.02 for those between 15 and 64, and 0.78 for those over 65’
Source: Human sex ratio - Wikipedia
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