Why are humans using avatars on Pandora?

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Tags

1. #which
2. #james
3. #unobtanium
4. #conceived
5. #earth
6. #exoplanetary
7. #universe
8. #flora
9. #humans
10. #fauna
11. #called
12. #pandora
13. #indigenous
14. #cameron
15. #varied
16. #sapient
17. #species
18. #avatar
19. #humanoid
20. #science
21. #director
22. #fiction
23. #inhabited
24. #fictional