I think carbon and hydrogen.
        
                    
             
        
        
        
<span>a. spinal cord
Spinal Cord is the part of the nervous system responsible for connecting the brain to the body.
</span>The nervous system is divided into two groups. The Central Nervous System and the Peripheral Nervous System.
The Central Nervous System involves the Brain and the Spinal Cord. Its contains the integrative and control centers.
<span>The Peripheral Nervous System involves the cranial nerves and spinal nerves. It is composed of the communication lines between the Central Nervous System and the rest of the body.</span>
        
             
        
        
        
Most of the water is salt water
        
                    
             
        
        
        
Before - question, research, hypothesis, experiment, conclusions
        
             
        
        
        
Alright bruh. I did some research and it's Cerebellum. Ight. Dueces homies xD