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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?

  1. Growth of plant roots but not movement of glaciers
  2. Movement of glaciers but not growth of plant roots
  3. Both growth of plant roots and movement of glaciers
  4. Neither growth of plant roots nor movement of glaciers can break solid rock.
Distribution of responses
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%