What is the Biological age of maturity in teens?

You are officially a teenager at the age of 13.

The teen years are usually described by the physical ages of a person beginning at 13 and ending at 19. However, many people behave like a teenager both before and after these physical years. A...

13 you are considered a teen so why can't you have a job at 13.

It means to start realizing how serious you must be on certain situations. It means to be responsible, respectful, and always aware if you're in a uncertain situation, you have to be really wise...

it depends. If the teen is ready to kiss, then it's ok. but if the teen isn't ready to kiss, they shouldn't. it's also the parents decision, if you are in the beginning of your teen years.