3. mountains running through Russia and bordering Russia's Siberia region
4. a plain that covers almost 1 million square miles and is one of the world's largest and flattest plains
5. a desert in Eastern Kazakhstan that stretches south into Uzbekistan
6. a desert that extends over Turkmenistan
7. the climate that occurs over most of Central Asia, characterized by dry conditions
8. the climate of Georgia's coastal lowlands, which receives up to 100 inches of rainfall per year
9. the saltwater lake that separates the Caucasus and Central Asia
10. the Siberian river that forms the border between Russia and China and whose valley is Siberia's main food-producing area