Question

Puberty began for Molly when she was 9 years old. Her mother began puberty at 11 years. For her grandmother, the onset was 13 years of age. What is the term used to describe the changes in the age of the onset of puberty over time?

Answer 1

Secular trend

Explanation:

The secular trend is the phenomena that are related to puberty. As the generation passes the average time of puberty got changed. Many of the parents don't know about the secular trends. The nutrition, lifestyle affected the puberty. But many of the cases investigated by the researcher in which puberty started at the age of seven years that is very abnormal. The exact reason for the development of puberty is unknown but some of the researchers said there is obesity is the reason for the early development of puberty.

Answer 2

secular trend

Step-by-step explanation:

The concept of the changes in the time of onset of puberty is known as secular trend.

With time, the time either decreases or increases. That happen due to the change in climate and gene mutation. It also a by product of the the kind of food intake one is taking. With time, the food has become less healthy.

Therefore the this secular trend occurs in females over generations due to changes in circumstances.