University of Georgia in the United States, Dr. Christine Navarre 202 between 1997-2006 National population data were analyzed at birth. She found that the world's baby girl and baby boy born in the 100:105 ratio for the overall. However, because of the baby than the baby fragile and more vulnerable because the disease, accidents and malnutrition, premature mortality and other issues, so that they mature, the male to female ratio on the basic balance.
Navarra put infant sex ratio in the capital of the host country and its latitude, average temperature and day length changes in a comparative study. The results showed that climate, latitude and the existence of correlation between the rate of birth. Tropical countries of the baby birth rate was 48.9%, than the cold climate of the country the birth rate was 48.7 percent female. And this situation and way of life, the relationship between socio-economic situation is not much. Navarra believes that gender differences play a decisive role in proportion is the latitude changes.
In addition, there is a theory that because the baby more vulnerable to life, the northern part of the country more vulnerable boy who died due to cold and, therefore, a higher proportion of baby boy born in the country must have a role in compensation.
If you enjoy this article or Falling Leaves on interest, Please Subscribe to the full text of this site Feed .
You may also be interested in the related article:
6 large living supplies even more toxic than the leaded material
Secret British study, "cry the children have milk to eat"
7 Signal implied marital relationship problems
5 kinds of sound scientific methods of contraception
The correct use of condoms with disabilities seven small