10th.1 Crossword
                      
                      
                      
                      
                      
                      
                      
                      
                      
                      
                      
 
 
Down: 2) completely3) removal of impurities or unwantedelements from a substance,tytpically as a part of an idusterial process4) having limits or bounds6) synthetic organic material used as plastics Across: 1) oil in its natural condition, before it is separatedinto difeerent products5) a natural fuel,formed from the remains of living organisms7) separation of a liquid mixtureinto fractions by boiling at different temperatures
 

 

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