Answer is c bruh
you could have googled it to but i guess this is easier 
        
             
        
        
        
BONES: calcium, exercise.
MUSCLES: exercise, calories.
 
        
             
        
        
        
1. DNA is double stranded, while RNA is single stranded 
2. DNA contains the sugar deoxyribose; while RNA containers the sugar ribose 
3. The four nitrogenous bases that are a part of DNA are guanine, cytosine, adenine, and thymine; in RNA, the four nitrogenous bases are guanine, cytosine, adenine, and uracil (the uracil in RNA replaces the thymine in DNA) 
Hope this helps :)