Physically, it is possible, but highly unlikely. The man would have had to be sexually mature and active at age 8, which is extremely rare. Emotionally, it would be quite a stretch.
Yes - assuming he has reached puberty, a 13 year old male can biologically provide the sperm required to father a child.
Anyone can produce babies once they've gone through puberty.
yes...
Yes.
YES
Yes.
No, that would mean he became a father at 7. Not possible.
Yes
No he can not
Around 1940. Hagrid was in second year (aged twelve).
It is possible, age is just a number
No
It is possible if you have a child every year.
You can determine the year your child will graduate by either taking their current age and subtracting it from eighteen, or their current year in school and subtracting it from twelve, and then using the result to estimate your child's graduation year.
I am twelve and I can throw about 70-75 mph. For an average child maybe 80-85 mph.
If the father has joint-custody of the child, not many. You are also at risk of an accusation of child alienation if you refuse.