There are many non-physical changes that occur during adolescence, most notably the large increase in the number of conections between neurons in the brain. this is what causes the sporadic behaviour in adolescents, and helps the brain and personality to develop by 'trimming' the unnecessary synapses. The flood of hormones (testosterone and oestrogen in men and women respectively) that causes the physical changes also cause a development in the sexuality of the adolescent (it makes the horny).
hair
bogo
All the secondary sexual characteristics.
Physical changes
Umm. Many things can occur in height and weight'
It will grow in length, girth, and the boy will start getting erections.
You might find that you have... *mood swings *like girls/boys A LOT
Muscle growth increases giving better performance in sports for both boys and girls. Puberty is the onset of changing from child to adult in both body and brain.
Development
Development.
they're the same thing, how old are you?
During teen years, pubic hair will grow, and there will be hair on the armpits also.
waht changes in the chromosomes occur during meiosis