The Central Nervous System is made up of the brain and the spinal cord.
        
             
        
        
        
Not sure if you still need the answer but its number Three, they are the decomposers in many ecosystems 
        
                    
             
        
        
        
Its not c the correct answer would be the second on.
        
             
        
        
        
Lysosomes break down and recycle worn out cells.