Answer:a stationary front.
Explanation: 
they allow repeated thunderstorms to move across the same area.
 
        
                    
             
        
        
        
Answer:
Scanning Electron Microscopes
Explanation:
 
        
             
        
        
        
Answer:
down below
Explanation:
 The western edge of the African Plate is a divergent boundary with the North American Plate to the north and the South American Plate to the south which forms the central and southern part of the Mid-Atlantic Ridge.
 
        
                    
             
        
        
        
they combine the DNA of two different organims.
Explanation:
they join together genetic material especially the DNA from different biological species 
 
        
             
        
        
        
Answer: hey!
its important because it gives your brain a chance to rest and to reboot its self
Explanation: hope this helps (º–º)