Answer:
Spinal cord is a colon of nerve tissue that runs from the base of the skull to the center of the back.
Its function is to act as a highway communication between the body and the brain.
Explanation:
 
        
             
        
        
        
Sensory neurones send data to the brain.. the processes it and send back information with the help of the motor neurons.
        
             
        
        
        
Answer: Most rocks contain SiO2 (silica), which is a compound of silicon and oxygen that forms 74% 
  
        
                    
             
        
        
        
Chorus and vocal soloists in the final movement.