Stability of Earth Materials on Slopes Depends on the Balance

question 8

Multiple Choice

Stability of earth materials on slopes depends on the balance of gravitational and frictional forces. Which of the following does NOT have a measurable effect on the balance between gravity and friction?

• A) atmospheric air pressure
• B) steepness of a slope
• C) presence of water
• D) type of rock or sediment that is making up the slope
• E) types of vegetation on the slope

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