Removal of vegetation from a slope increases landslide danger because vegetation ____
a. ?removes water from the soil
b. ?removes clays from the soil
c. ?holds the surface in a homogenous layer
d. ?concentrates water in the soil
e. ?amplifies the effect of shock and vibration
ANSWER: a
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We can say that Earth's crust floats on the mantle because
A) the mantle is very hot and flows from internal convection. B) part of the mantle is hot enough to flow as a plastic solid. C) the continental crust floats on the oceanic crust. D) the mantle is below the crust.
In a solution made from one teaspoon of sugar and one liter of water, which is the solute?
A) sugar B) water C) the teaspoon D) both sugar and water E) none of the above
How does weathering promote mass wasting? What will be an ideal response?
Squall lines most often form ahead of a(n) ____ front
A) cold B) warm C) stationary D) occluded