Human migration is the movement of people from one place to another with the intention of settling in the new location. When large numbers of people relocate, historians ask questions about why these people moved and what impacts their movements had.
        
             
        
        
        
Answer:
The troposphere is denser than all its overlying atmospheric layers because a larger atmospheric weight sits on top of the troposphere and causes it to be most severely compressed. Fifty percent of the total mass of the atmosphere is located in the lower 18,000 ft of the troposphere.
Explanation:
 
        
                    
             
        
        
        
As with the Nazi's, there was heavy corruption and little to no control of the SS or enlisted soldiers, so the SS and enlisted men misused and abused their power and authority greatly. So much that many people, citizens, and even other soldiers, feared for their lives around  the Nazi's or higher figures/authority, mainly because they were unable to be stopped in anything they did, as in murdering people, stealing things, and other things that may be considered morally wrong. Hope this helps!
        
             
        
        
        
Those are all plateaus, though you could figure this out with elimination, too. Peninsulas are land forms with 3 sides water, mountains generally form in mountain ranges, and usually deserts are larger than the two small cells on the right side.
        
                    
             
        
        
        
Boats and ho's. buts its coal and steel.