Humans grow and change. It takes about eighteen years.
The first year a baby grows faster. Babies are feed and gradually babies put food in their mouths.
Children say first words when they are 1 year. Children dress tehmselves when they are 3 years.From ages of 4 to 11 children go to primary school
During this time boys and girls grow and change to become adults. (10 - 16 years old).
It is possible to have babies. (17 - 20 years old).