Biological factors that affect birth
The population growth of a particular place is determined by the level of fertility rate. It is because the country in which there is a high fertility rate, the size of the population is high in that country. The biological factors that affect birth are:
- Ovulation cycle
These can be a high possibility of being pregnant in the 14th day from the day of menstruation. If there are sexual contact at this period, the birth rate increases.
The mother can have less possibility of giving the birth of a new baby if she is breastfeeding. It is because the ovulation cycle remains slow during the location period. So, the birth rate goes down.