Just as on the demand side, the position of the supply can shift, say from a change in the price of a productive input or a technical improvement. The Law of Supply states that, in general, a rise in price leads to an expansion in supply and a fall in price leads to a contraction in supply.
Puberty takes place over a number of years, and the age at which it starts and ends varies widely. It generally begins somewhere between the ages of 7 and 13 for girls, and somewhere between the ages of 9 and 15 for guys, although it can be earlier or later for some people.
Gender Segregation in Early-Childhood Social Play 341 and ranked the children from oldest to youngest based on information from parents and relatives, season of birth, and our examination of dentition. The average age of Boï¬ farmer focal children was 34.6 months; the Boï¬ forager focal children averaged 38.8 months.ender Segregation in Early-Childhood Social Play 351 sample, we may have been able to detect more subtle gender segregation among the Boï¬ farmer girls. Interestingly, Boï¬ forager girls did not show any signs of gender segregation at either age.