20. Which of the following is true about the relationship of gravity to landslides? steeper slope can trigger massive landslide 1. II. steep siope means faster landslide III. steep slope means nearer landslide debris TV. steeper slope can cause more viscous landslide a. I only b. il only c. Ill only d. IV only 21. Which of the following is a natural cause of landslide? a. clear cutting b. mining c. cultivation d. liquefaction 22. Which of the following is a factor that affects the stability of the slope? a. wind speed b. heat change c. light intensity d. soil nutrients 23. Which of the following is not an effect of landslides? a. earthquake b. tsunami c. death d. depopulation 25. Which of the following pertain to vibrations that weaken soit due to blasting technique? a. clear cutting b. earthquake c. gravity d. mining 26. Which of the following can cause dissolution sinkholes? a. exposed carbonate rock b. dissolved igneous rock c. narrowing wetlands d. wilted vegetation 27. Which of the following is not a natural cause of landslides? a. climate c. erosion b. cross d. weathering cutting in the level of ground 28. When there is a significant upsurge in precipitation it would cause a/an water. a. decrease c. insignificant b. increase d. stable 30. Which of the following is responsible for saturating the soil with water which causes landslides? a. climate c. sunlight b. erosion d. weathering

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