Answer:
i would say negitive 
Explanation: its a bad effect on life.
 
        
                    
             
        
        
        
The answer is<span> the tetrahedron.</span>
        
             
        
        
        
The region of the brainstem that plays a role in arousing you to a state of alertness would be the reticular formation. It is responsible in regulating the sleep cycles and in detecting sensory conditions. It consists of more than 100 neural network that are for various functions.
        
             
        
        
        
Answer:
DNA replication needs to occur because existing cells divide to produce new cells. Each cell needs a full instruction manual to operate properly. So the DNA needs to be copied before cell division so that each new cell receives a full set of instructions!