The average weight for a 10 year old boy is about 70 pounds.
I guess so a 10yr old girl is training to be a vet so I think so.
120-160
It would all depend on how tall you are. I was 8st 2lb at 10 and am now a healthy weight as an adult so I would not worry if I were you just make sure you get plently of exercise, stay active and watch the sugar foods.
Check nutrition.gov
Well just ask him, don't be shy just go and talk to him!
Obviously, it is not legitimate, and you would be disqualified at least!
70-120
yes
No, you have to be a certain age, and I think its either 16 or 18.
The weight of a 13 year old will change depending on his/her hight. A 13 year old boy who is 5"3 should be about 120-130 pounds. For boys who are 5"5 should be about 125-140. Keeping in mind that most of this weight should come from muscle and not fat.
no, it's fine . only if you are about 130 or more. i was 120 when i was 5'3