How do they all survive with no trees?

The Hyperion corporation imports the O2 that is required for breathing.

The trees are invisible.

Because "videogames".

Are you sure that they need to breath oxygen? I don't remember if I have ever heard the word "human" in Borderlands lore.

grass, algae, fungus

There are Cacti in Borderlands 2, which are actually pretty good at producing oxygen.

Clearly the people on Pandora have adapted to the small amount of Oxygen.

Stinging Cacti, Firemelon, the corrosive plants, etc. all the plants are there they just attack you.

There's a perfectly logical explanation for all this: the entire cast of Borderlands 2 is Na'vi. Were they breathing oxygen in Avatar? Exactly.

grass, algae, fungus

Maybe the goverment of Pandora can't afford SpeedTree?

@The_Laughing_Man said:

@Tennmuerti said:

grass, algae, fungus

Which Sci Fi movie was it that they went to mars and used Algea then the bugs that where in the Algae went insane and ate everyone? I think it also had some killer robot in it as well.

Red Planet

They had trees on the Borderlands expansion "Zombie island of dr nedd", im sure there are others in areas we just dont go to.

@ImmortalSaiyan said:

Clearly the people on Pandora have adapted to the small amount of Oxygen.

Or they haven't and that's why everyone is straight up crazy.

All the trees are probably on the other side of Pandora.

@The_Laughing_Man said:

@Tennmuerti said:

grass, algae, fungus

Which Sci Fi movie was it that they went to mars and used Algea then the bugs that where in the Algae went insane and ate everyone? I think it also had some killer robot in it as well.

Red Planet