No. Compatibility means whether or not it will run, and unless you modify your Xbox 360 then your answer is in your question. Not compatible? Won't work.
yes
it depends those that do play you need to download from xbox live some dont even play at all to find out you need to check on xbox live
No, the nymphs are not available as playable characters, only Rayman and Globox colour variants, and teensies.
There is a full list of compatible xbox games for the xbox 360 on wikipedia.
Actually yeah it can except unlike the regular xbox it doesn't have a remote you press something on the controller and look and the stuff you can do
yes, you can even play with the xbox 360 controller
The region code of the disc might be different from that of the xbox
Yes you can play American Xbox 360 games in Australian but only on Australian Xbox consoles. Although there is a way you can play American Xbox games on an Australian Xbox. It can be done by getting your Australian xbox chipped/modded so you can play any region games and even fake/burnt games.
No any flash isn't compatiable with apple software
i think it's one of the powers you get when you play the game.
Yes. If you somehow manage to get the Xbox Arcade compilation disk, you will be ale to play their demos. If you have Xbox Live then you can download the demos or even the full game that the arcade has plus more!
How should anyone besides Microsoft know? How do we even know it will be called or if there will ever be an "Xbox 720"?