Answer:
The movement by people from one place to another with the intentions of settling, permanently in the new location is called migration. Migration may be by individuals, family units or in groups. Most of the people get migrated for employment, in present scenario
 
        
                    
             
        
        
        
It destroyed the Russian economy, but freed many nations that were behind its Iron Curtain. But thanks to Vladimir Putin, the Russian economy is doing better than it has been in many years. Oh, it also "ended" the Cold War.
        
             
        
        
        
Mabye you should provide an answer key or mabye make the question more accurate. 
        
                    
             
        
        
        
Answer:
they depend upon the type of desert and its location
 
        
             
        
        
        
The correct answer would be : erosion
I hope that this helps you !