Green house gases and pollution
        
             
        
        
        
Answer:
Europe Asia Africa North and South America
Explanation:
 
        
             
        
        
        
At low latitudes, the thermocline is a zone of rapid temperature
over a relatively short depth. it is associated with a similar depth zone marked by a change in density called the pycnocline.
        
                    
             
        
        
        
please provide some context, thanks
        
             
        
        
        
The answer is A. Appalachian Mountains  
When American colonists headed west they crossed what will known today as the Appalachian Mountains.
Hopes this Helps u ;)