In the show, it's genetic. If both parents are Airbenders, their children will all be Airbenders. If one is a Bender, but the other isn't, the kids could be non-benders or benders. If you mean in real life, it's impossible.
It depends on the air bender.
Tenzin is not an air bender. Tenzin is a associate of the tezin's dad
Everybody in Naruto would owneveryone in Last Air Bender
Azula, Zuko's sister
Avatar: The last air-bender movie 1 came out on June 30, 2010.
raveel
Aang is the second to last airbender. Appa is an airbender too. The extras said so.
west air temple
TokyoPop
yes there is
Yes
There already is.