Answer:pencil life cycle is way different because as you know they make pencils from wood which is trees so they have to grow the trees first. 
Explanation:
 
        
                    
             
        
        
        
He association of two or more polypeptides in a multimeric protein is known as the <span>Quaternary structure.</span>
        
             
        
        
        
The best way of doing it without potentially causing harm to yourself, would be "wafting".