The two most obvious ones are on the far right, and near the far left. Oceanic lithosphere is descending into the earth's mantle at these places, and being destroyed. ... At convergent boundaries oceanic lithosphere is always destroyed by descending into a subduction zone
 
        
                    
             
        
        
        
The answer is B that should be the answer
        
                    
             
        
        
        
If a country is isolated, it will have to produce everything that it needs: especially food clothes and medicine. It won't be able to specialize, but it will have to focus on satisfying the needs of the people.
If it is not isolated, it can specialize in the things that it can produce the best and fastest, and hope to exchange it for the things that it can't produce. 
        
             
        
        
        
I would need a picture to help you
        
                    
             
        
        
        
Answer:
It’s the first one, humans