This is something we already know Rockstar is going to give us as we see a variety of different biomes in the trailer, but I figured I'd still include it. (bitcultures.com)
Finally, organisms and ecosystems in different biomes and on different continents are not strongly connected. (newscientist.com)
The developer states that» Originally the plan was that you unlock different regions representing different biomes and themes with different Ooblets, trainers, and challenges all through the Badgetown trolley.» (mypotatogames.com)