It depends entirely on when the male's body is capable of producing viable sperm. The age depends on how fast the male's body matures, in the US the age is USUALLY around 12-13 years, or at the onset of puberty, but can be younger or older.
I'm guessing 14 maybe 13
3
13
To do that you have to have a fertile human male and a fertile human female and they have to have intercourse and produce a baby. The fertilized egg will build a human skeleton for the baby.
8 months
You can't.
From around 6-7 months of age providing testicular development was normal.
From 7 months to a year...
caveman
you don't need a male to have a fertile egg... the female body needs to be healthy and fertile to make a child which that part does take a male
As human females approach middle age they go through a change called the menopause. At the end of this change they are no longer fertile.
Depending on the species, male rabbits are often fertile by the time they are 7-8 weeks old. They should be separated from the females at around 6 weeks.
18. A human male stop growing at the age of 35years. This is when he changes from youth-hood to adulthood.
Yes, there is such documented cases of true hermaphroditism. Some true hermaphrodites can be fertile as a male, some - as a female. But there is only one documented true hermaphrodite in human history who was fertile as male and female.
Given the usual conditions : intact female, fertile age, in heat, gets to mate with an intact male - sure.