Item WE007002: Both the growth of plant roots and the freezing of water can break earth's solid rock layer.
Which of the following can break solid rock?
- Growth of plant roots but not movement of glaciers
- Movement of glaciers but not growth of plant roots
- Both growth of plant roots and movement of glaciers
- Neither growth of plant roots nor movement of glaciers can break solid rock.
| Answer Choice | Overall | Grades | Gender | Primary Language | ||||
|---|---|---|---|---|---|---|---|---|
| n = 686 | 6–8 n = 430 | 9–12 n = 251 | Male n = 335 | Female n = 341 | English n = 615 | Other n = 56 | ||
| A. | Growth of plant roots but not movement of glaciers | 12% | 11% | 11% | 14% | 10% | 12% | 9% | 
| B. | Movement of glaciers but not growth of plant roots | 19% | 19% | 19% | 18% | 20% | 18% | 21% | 
| C. | Both growth of plant roots and movement of glaciers | 61% | 60% | 64% | 59% | 64% | 62% | 55% | 
| D. | Neither growth of plant roots nor movement of glaciers can break solid rock. | 8% | 9% | 7% | 9% | 7% | 8% | 14% | 

