Possibility of acid rain will increase
 
        
                    
             
        
        
        
Excess Nitrates in the water supply
        
             
        
        
        
Answer:social,intellectual,perceptual,personality and emotional growth.
Explanation:
The study of development psychology is important in understanding how humans mature.The role of a development psychologist is to study the changes in human development across the life span.This changes include:
•physical
•cognitive
•social
•intellectual
•perceptual 
•personality
•emotional growth
 
        
             
        
        
        
Answer:
A. Redshift and Blueshift
Explanation:
It’s red shift and blue shift, because this only occurs when the frequency of the wave is made longer or shorter due to the movement of the source relative to the observer.