LOWER  is the answer 
I hope this help
        
                    
             
        
        
        
Organs combine to form C. an organ system
hope this helps
        
                    
             
        
        
        
The hydrosphere is defined as the water surrounding the surface of globe include oceans lakes etc
The statement that is not correct about hydrosphere is
Most of the water making up the hydrosphere is in lakes
because its not lakes its oceans
so correct option is B
hope it helps
        
                    
             
        
        
        
B is the answer. Typing more bc character limit