Period 1-page 52 Crossword
                    
                    
                    
                    
                    
                    
                    
                    
                    
                    
                    
                    
                    
                    
                    
                    
                    
 
 
Down: 1) cancel2) below awareness level3) unnecessary5) times before civilization8) trace of something harmful Across: 2) encased in protective covering4) able to return to original condition6) destroy completely7) too small to measure9) move in waves
 

 

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