Yes, organic material in soil is more productive.
        
                    
             
        
        
        
Answer:
D. One-third
Explanation:
A. is not the right answer. This is too little to spend on the shelter in a year.
B. is not correct. This would be too much to spend on  the shelter.
C. is incorrect. One-quarter is the same as one-forth, therefore inccorect. 
<u>D. is the right answer. On avarage,  one third of earnings and consumption in American household would go on shelter, meaning housing, utilities, rent etc. </u>
 
        
             
        
        
        
It supports current flowing because when the water in the ocean heats up the current goes in a circle