1. 
   Oak savanna
   An oak savanna is a type of savanna, or lightly forested grassland, where oaks (Quercus spp.) are the dominant tree species. These savannas were maintained historically through wildfires set by lightning or humans, grazing, low precipitation, poor soil, and/or fires set by Native Americans. Althoug...
   Found op http://en.wikipedia.org/wiki/Oak_savanna
   
   

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