Water is always involved with landslides. This is because it: (A) reduces the shear strength of rocks (B) increases the weight of the overburden (C) enhances chemical weathering (D) is a universal solvent

Water is always involved with landslides. This is because it:

(A) reduces the shear strength of rocks

(B) increases the weight of the overburden

(C) enhances chemical weathering

(D) is a universal solvent
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1 Answer

Answer :

Answer: B 

A landslide is a geological phenomenon that includes a wide range of ground movements. Rockfalls, deep failure of slopes and shallow debris flows were common. Landslides can occur in offshore, coastal and onshore environments. Na tural causes of landslides include: 1) Groundwater (pore water) pressure acting to destabilize the slope 2) Loss or absence of vertical vegetative structure, soil nutrients, and soil structure. 3) Erosion of the toe of a slope by rivers or ocean waves weakening of a slope through saturation by snow melt, glaciers melting, or heavy rains. 4) earthquakes adding loads to barely stable slope earthquake-caused liquefaction destabilizing slopes 5) volcanic eruptions 6) Landslides are aggravated by human activities, such as deforestation, cultivation and construction, which destabilize the already fragile slopes. 7) vibrations from machinery or traffic. 8) blasting
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