Answer: I don't have a definitive answer for this question but I do have a helpful explanation.
Explanation: Try to find out what each letter means and organize the elements by how they connect to each other. If you don't know you can research to find a diagram that can help show you how to connect these functional elements. You could try searching how do you find the elements of HOH in a diagram.
 
        
             
        
        
        
Answer:
reflection I took the test
 
        
                    
             
        
        
        
A scientific law would be your answer.
There are many laws that are defined using formulas. 
I hope this helps!
~cupcake
        
                    
             
        
        
        
The sugar-phosphate backbone is an important structural component of DNA. It consists of 5-carbon deoxyribose sugars<span> and </span>phosphate<span> groups.
Hope this helps 
Have a good Day</span>