I think it means like... Behind the books is knowledge so behind all the reading an hard work there is a lesson to be learned and knowledge to be gained and thi gs to be discovered
        
             
        
        
        
Answer:
That man is no longer Kevin's dad
 
        
                    
             
        
        
        
I personally believe the answer is D because there is evidence that seems to back up the claim of changing weather. (Sorry if this is late or incorrect)
        
                    
             
        
        
        
Answer:
cause it will hamper in our existence