|  | 21. | A negative test shows no clumping of gelatin particles. 
 
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|  | 22. | It was a six-foot-tall clumping perennial loaded with snapdragonlike flowers, 
 
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|  | 23. | Do you use clumping or regular cat litter? 
 
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|  | 24. | The sugar keeps the flour from clumping and facilitates handling delicate, rich doughs. 
 
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|  | 25. | The San Diego Spirit players were clumping off the field for the brief intermission. 
 
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|  | 26. | Agglutination is the clumping together of blood cells. 
 
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|  | 27. | The clumping habit helps hold the mussels firm against the force of the waves. 
 
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|  | 28. | Locals use grains of rice in the salt to keep the salt from clumping. 
 
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|  | 29. | It has creeping rhizome ( approximately diameter ), forming a dense clumping plant. 
 
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|  | 30. | Their clumping allowed him to see which regions had the highest concentration of oxygen. 
 
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