D. Estuaries
Estuaries are a place where fresh and salt water mix.
        
             
        
        
        
The main function of the circulatory system is to move blood and lymph<span> through the body. Doing this transports nutrients and oxygen to the cells of the body and removes waste products such as carbon dioxide.</span>
        
                    
             
        
        
        
Yes, waves can carry energy through