It triggers production of sperms, Development of public hair, Facial hair, Thickning of voice etc.
The changes hit females early than to men. Also the trigger is estrogen in girls and testosterone in boys.
Testosterone is the male sex hormone and is produced in the testes. Testosterone changes a boy's body to a man's body and is responsible for all those changes in boys during puberty (body hair, larger penis, larger sex drive).
testosterone
In males, testosterone and androgen are the principal sex hormones responsible for puberty. The hormone that dominates female development is estradiol and estrogen.
There are actually a bunch of different hormones that cause the changes during puberty, but the dominant one in males is testosterone, while the dominant one in females is estrogen.
No it will not let your moods swing.
Seasonal changes happen because of the tilt of the Earth's axis, relative to the plane of the ecliptic.
no sex drive at all
1. voice changes 2.grow hair
Because hormones in our bodies are changing.
Testosterone
The changes that take place are mostly due to the testosterone in males. In girls, the hormone oestrogen is important.