Question

Define the term puberty. List two changes observed in girls at the time of puberty.

Answer 1

the term puberty is changes occurring in teenagers at the age between 12-14 years known as puberty.

1. Growth of breast, color of nipple is start to black.
2. pubics hair start growing. 

Answer 2

the period during which adolescents reach sexual maturity and become capable of reproduction is termed as puberty. changes observed in girls during this period of time is as follows-
1. hips widen
2.breasts  start to develop