All of them...
5
The Jonas Brothers have affected many teenagers in a very BAD way. They are all HORRIBLE inspirations and their STINKY music can help you barf when you're sick.
The entire body is affected because puberty involves the release of many hormones. However, in females the body is greatly affected in the pubic area, the breasts, the underarms, and the curves of the waist. In men, puberty is noticed in facial hair, underarm hair, pubic area, genitals, and a deepening of voice.
Most teenagers will hit puberty around the age of 18. Many of them will stop growing around the age of 17.
many people get spots at times when they're teenagers. it is just a sign of puberty. everyone goes through it at one stage in their life.
probably around 90%
There are many viruses in the world today. It is impossible to say how many teenagers were found with the virus without knowing which virus you are referring to.
Puberty can be a very tough time for some teenagers, so learning about what will be happening and why it is happening is very reassuring; just knowing that what happens is completely normal is a very comforting thought for many teenagers.
That isn't true, it is effected by environmental factors, including many chemicals. However, it is a natural process. see link: http://en.wikipedia.org/wiki/Puberty#Genetic_influence_and_environmental_factors
Teenagers can fear anything an adult or child fears. There are many phobias in this world which all ages can have. Teenagers aren't the exception.
because it affected many countries because it affected many countries
Most people in the world are affected by dust. (Affected = it influences them in some way)