i just saw the special edition and it shows the Na'vi destroyed the bulldozers i ask how was this feat achieved you can't blow something up without explosives?

Because the Navi are special kitty space elves who are one with nature and are much better than those mean ol capitalist Americans.

Because James Cameron can't be bothered with details when he knows shit in a box will make just as much as gold in a box.

also when they were destroying the tree the arrows didn't pierce the glass but later they did

Later on they shoot them from those bird-things (a bit extra speed), but still... that doesn't make sense. It's just movierules.  

Unobtanium...? That's how scientific cameron is. Seriously.

If you're gonna pick apart all the plot holes in Avatar we will be here all day.

explosive sap...

Prove they didn't

can you prove they did

also the soldiers seemed massively underpowered like the soldiers didn't have any rocket launchers they could have just used a stealth bomber to take out the tree of souls and the hover planes went down way too easy

They 'explained' the lack of those military tactics with the 'fact' that Pandora's atmosfeer screws up advanced equipement.

The (private) military in the movie looks pretty lame for the future age.  They don't even have killersatellites around the planet.  Geez, we could even build them today.