Biology Adolescence or age of puberty
24 Sep 2020
Anjum Nahid
Class 11
English

Description

We can divide the individual life into four sub stages....1.infant, 2 childhood, 3 adolescence, 4 adult...In adolescence a junction age between childhood and adult hood.And also known Cyclonic age ..it means the glands are active and start the secretion of chemical substances called hormones..