Check-in for air travel differs depending on your starting destination, your final destination, the airline you are flying and your travel day and time.
Boys continue growing until age 17 or 18. Boys and girls grow about two inches per year until they reach puberty. Then they each have a growth spurt that lasts a year or two. During the growth spurts, boys grow a little faster than girls. Girls reach puberty (on average) about a year before boys do. Girls also end puberty earlier than boys.
comments it is a well known truism that girls mature faster than boys but now scientists have discovered for the first time that their brains can develop up to ten years earlier than boysor girls this can happen as early as 10 years old but for boys it can take until between 15 and 20 for the same