Puberty is marked by significant .... ✴CHANGE in voice...❗ ✴change in height....❗ ✴ change in the size of lungs and HEART...❗ ✴ Development of sex organs....❗
The puberty is about 12 years for BOYS and 10 years for girls...
hope it will help you Plz mark it as braniliest ☺☺