Avatar the movie

10 Questions on Avatar
1. Why can't the humans convert the unbreathable air in Pandora into oxygen?
2. What happens to the "dragon" that the main character rides after he jumps off its body and starts to control the rook?
3. Why are the Pandorians so spiritual?
4. How do the Pandorians grow so tall?
5. Why don't the humans use cruise missiles or long-range missiles to destroy the scared tree?
6. Are there the 4 seasons on Pandora?
7. If the humans can master space travel, why haven't their wood cutting technologies improve?
8. Where do the humans get their electricity to power their spaceships and buildings?
9. What do the humans need the uranium for?
10. If man can turn humans into Avatars, why can't they just turn the Pandorians into humans?

Thoughts/ Feelings about Avatar
I feel that Avatar has a mind boggling story line. In the beginning, I did not understand what the story is about until the main character was sent on a undercover mission and act as one of the Pandorians in his Avatar. I did not understand why the humans were trying to do at the start and also why the Pandorians kept using the term "Eywa" until near the end of the movie, where I finally understood that it was referring to the wise spirits in Pandora. I could only fully understand this movie near the end. I feel that this movie is a little bit far-fetched as travelling to another solar system takes a few hundered light years so it will take a very long time for humans to master space travel and i feel bad for the humans who were defeated when they are sent back to the near-dead Earth(after men's act of pollution and deforestion) as I think that the general of the army is the only "bad guy" and that the other soldiers are only listening to his command, so they should be given the choice of returning or staying.