OK, one mistake that most people forget. Deserts. Most deserts occur behind a mountain range. For example, the Nevada Desert has the Sierra mountains between it and the ocean. And that huge desert in Africa? You can thank Mount Everest and its comrades for that. The theory goes that as the clouds move in from the ocean, they reach the foothills of the mountains. As they slowly rise over the mountains, they lose all of their water. By the time they clear the highest part of the mountain range, there is nothing but dryness left. And then you get the desert, in the "rain shadow" of the mountain.
And then you get different habitats in different latitudes. It has a lot to do with the wind currents and ocean currents. Observe.
These I though were useful . The first one shows what sorts of habitats are where in the world. The second one shows how the habitats progress as you move across America.
On a side note, as awesome as Avatar is, such big creatures don't live in the jungle. The big rhino creatures and that panther guy? They're too big to easily travel the jungle. There are elephants that live in the jungle, but they're smallish elephants and they make paths to follow and they live in very small groups.
Anyway, Avatar creatures are awesome. They just don't follow earth guidelines.
Oh, and the alien guys from that movie, the Na'vi? How come they don't have six legs like the other creatures on the planet? And why don't they breathe through their chests like the horse creatures? They're great, but they look a little too human. They should have given them different feet at the least, or something. Whatever. Just commenting.
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