Biomes

If you're looking for some ecological and biological inspiration while world building, be sure to check out the website set up by the first year students from the Marietta College Department of Biology and Environmental Science.  It's got just enough information on many of the world's biomes to give an overview, just how you want to get your player's interested without overwhelming them.  It covers temperature, precipitation, geological information, flora, fauna, and the other basics needed to present a region in a complete but quick manner.  They also have lots of excellent charts and photographs to help better understand the diversity of each location.  Enjoy!