It would be helpful if you could provide the list of secondary characteristics you are referring to so that I can identify which ones do not develop during the teen years.
Secondary sexual characteristics refer to physical changes that occur during puberty, distinguishing males from females. There are several secondary sexual characteristics that typically develop during the teen years. However, one characteristic that does not develop during this period is the growth and development of facial hair in females. Facial hair growth is predominantly seen in males due to increased testosterone levels during puberty. While some females may have minimal facial hair growth due to hormonal imbalances or genetic factors, it is not a typical secondary characteristic that develops during the teen years for females.
