Natura - nature actualia - actual entities Mundus Plinius - physical world Astra Plinius - celestial bodies Universe (Supercluster) Virgo-Hydra-Centaurus Supercluster (Supercluster) Virgo Supercluster (Cluster) Local Group (Galaxy) Milky Way Galaxy veter. (Spiral arm) Orion Arm (Region) Local Bubble Local Interstellar Cloud (Planetary system) Solar System (Planet-satellite system) Earth System (Planet) Earth veter. "spheres" (Earth) (Sphere) Biosphere (Earth) - zone of life "terrestrial and freshwater ecoregions" (Bioregion) Old World (Biogeographic realm) Palearctic (Ecoregion complex) Caucasus-Anatolian-Hyrcanian Temperate Forests (Palearctic) (Terrestrial ecoregion) Caucasus mixed forests (Palearctic) 1 "Turkey" (Caucasus mixed forests) 2 "Georgia" (Caucasus mixed forests) 3 "Armenia" (Caucasus mixed forests) 4 "Azerbaijan" (Caucasus mixed forests) 5 "Russia" (Caucasus mixed forests)