The answer is C. transportation is a service.
        
                    
             
        
        
        
Answer:
The answer is x = 10.
Step-by-step explanation:
Use the pythagorean theorem.  A would be 6, B would be 8, and C would be solved by the product of that.
 
        
             
        
        
        
Answer:
The correct option is B) To help people prepare for the future.
Step-by-step explanation:
The other three options are irrelevant to scientific research on environment .
Hence the correct option is B)
 
        
             
        
        
        
Answer:
x= 5 , for c to be same on each eqn
 
        
             
        
        
        
7-3=4 
4/2=2
The answer is 2