well some word like dog-food and cat-fish 
are named by their looks, feel, or even what they are used for.
 
        
                    
             
        
        
        
The answer is B. The lines of Latitude are about 69 miles apart. Each line of latitude is 1 degree of the angle of circumference of the earth, with parallel latitude lines lined up going East-West. Since the lines are stacked up north to south, your latitude describes your North/South position on the earth. Since these lines are parallel, their distance in generally constant. 
        
                    
             
        
        
        
The economic system may be production,allocation,distribution,firms,and how the government responds to the economic problem.
        
             
        
        
        
Answers:
Number 2: Pine Trees.
Number 3: The Coastal Plain.
Explanation for number 2: The lower part of the Coastal Plain does not have very fertile soil, so not many things can grow except for pine trees and brush. 
Explanation for number 3: None needed.