Depends on which airlines you wish to fly with. Check their website - there usually is a section for unaccompanied minors.
No. I had a school friend (in the 60's) of that age who shot himself in an accident with a gun.
you can't fly solo in a plane while you're a kid (you can fly with an adult copilot) but can get you're pilot's licence when you're 17
No, a baby is not stronger than a 10 year old kid.
Yes it is fine if a 70 year old person could go on a plane!
A thirteen year old is considered a teenager, not a kid.
he has 13 year old son and a 17 year old daughter
A tween.
It depends on the circumstances. What the children ate. The weight, height...
Well spank the 3 year old and talk to him about it just if it is your kid. Don't spank the kid if it is not yours. Put him in the corner if he is not your child.
Yes he can
By plane maybe.
Yes