Stratification

Crossword

Complete the crossword, then click on "Check" to check your answer. If you are stuck, you can click on "Hint" to get a free letter. Click on a number in the grid to see the clue or clues for that number.

1   2                    
                   
 3            4          
                   
5                     
       6              
                 7    
8                     
                   
   9                  
                   
   10     11               
     12                
       13              
                   
14                     
                   
       15