I've recently became curious about the moon wide super organism on Pandora known to the natives as Eywa.
Eywa is theorized by human scientists to be a superorganism of all living things on Pandora. they are all connected through a system of neuro-conductive antennae; this often explains why Na'vi can mount their direhorse or mountain banshee steeds and ride them immediately without going through the necessary steps required to domesticate such wild animals.
I'm curious if an organism like this could work in reality. Could evolution actually create such a massive super organism like this, and what would be some challenges this creature would have to overcome if it were to exist on an actual alien planet?
Just so there isn't any confusion and questions about this, lets just say the environment and atmosphere is just like how it is on Pandora.
If there's any problems with my questions, let me know in the comments.