The Galapagos shows a variety of animals who have adapted to their untouched environment. Some of the animals have close relatives on other continents the have distinct features of their own proving that species can form and adapt to their environment.
        
             
        
        
        
The action is Fixed Action Pattern.  It is a highly typecasted sequence of behaviors that, once begun, is usually carried to completion. It is triggered by a sign stimulus. The egg outside the nest is the stimulus.b <span>It is performed virtually the same by all regardless of environmental conditions. </span> Even if the egg is removed or slips away, she completes the behavior by returning an "imaginary" egg to the nest. 
        
             
        
        
        
Another name is hydrologic cycle.
        
                    
             
        
        
        
Answer:
The speed of the light waves will decrease
 
        
             
        
        
        
activities of living organisms (animals, burrows, plant roots), pressure from overlying load/materials and atmospheric conditions.