The coastline is the term used
        
                    
             
        
        
        
Answer:
The two natural factors are.
Rainfall and river
The two man made factors are
Canal and tube wells
 
        
                    
             
        
        
        
Answer:
The determination of the numerical age of an object.
Explanation:
Absolute dating determines the numerical age of an object.
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Answer:
Catastrophism.
Explanation:
According to Geology, there's a theory which held that surface, mountains, lakes, were created by suddenly because of great catastrophes like earthquakes and floods.