Explanation:
Formal; A formal information system is based on
 the organization represented by the organization chart.
Informal; The informal information system is 
 employee based system designed 
 to meet personal and vocational needs 
 and to help in solution of work-related problems. 
 
 
        
             
        
        
        
Answer:
PMPs are typically referred to interchangeably.
Explanation:
 
        
             
        
        
        
Through the use of <span>satellite imagery</span>