Geography

4. the process of eroding or being eroded by wind, water, or other natural agents.
5. river the continent's longest, and the principal waterway of western Russia and the historic cradle of the Russian state.
7. the study of the physical features of the earth and its atmosphere, and of human activity as it affects and is affected by these, including the distribution of populations and resources, land use, and industries.
8. a low-lying tract of land that forms an artificial hydrological entity, enclosed by embankments known as dike
10. a long, narrow, deep inlet of the sea between high cliffs, as in Norway and Iceland, typically formed by submergence of a glaciated valley.

1. the arts and other manifestations of human intellectual achievement regarded collectively.
2. the rigid outer part of the earth, consisting of the crust and upper mantle.
3. the regions of the surface, atmosphere, and hydrosphere of the earth (or analogous parts of other planets) occupied by living organisms.
6. mountains a mountain range in Eurasia that runs north–south mostly through the Russian Federation,
9. the spread of ideas, objects, inventions, and other practices from place to place