Puberty
it is possible. some people cut their arm hair but if u don't then it can be that long. yes
maybe
Because we'remammals.
Reach puberty.
yes a salamoaner arm can grow back
You cannot.
That depends on how hairy you are, though there are some areas that work out for everyone. Everyone will eventually grow hair in the groin, axilla,legs,forearms and face facial hair. The more hairy you are, you will grow hair in more places, like the thigh, the chest and the belly, the upper part of the arm, the shoulders and even the back.
I'm 17 and my hair grows back the next day on my legs and arm pits. Most people's hair grows right back. I would try waxing or use nair and it won't grow right back. Hope that helped.
No it won't change. Don't worry about having hair at your age. In 6 months you won't know your body.
Yes lucas does have arm pit hair, although not very manly person he still does have the capability to grow arm pit hair. yes it is surprising.
When they reach puberty - yes.