Earthquakes usually happen when a plate underground rubs together.
Hope that helps!
Landslides along cut banks are common; a landslide along a cut bank affects the discharge of a river because the landslide the discharge would increase because the cross-sectional area of the river would increase.
Landslides are resulting from disturbances in the herbal stability of a slope. They are able to accompany heavy rains or comply with droughts, earthquakes, or volcanic eruptions. Mudslides broaden while water rapidly accumulates in the ground and results in a surge of water-saturated rock, earth, and debris.
The cross-sectional area is the place of a -dimensional form that is obtained while a three-dimensional item - which includes a cylinder - is sliced perpendicular to some special axis at a factor.
Cut banks are caused by the moving water of the river sporting away the earth. A factor bar then again is placed on the interior of a bend in a river (meander). Because the river curves around the bend within the river, the water slows down and sediment is dropped to the river bed.
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-- To increase the frictional force between the two surfaces, press them together
harder, or rough up the area of contact with sandpaper or dirt.
-- To decrease the frictional force between two surfaces, decrease the force
with which they press together, or smooth (polish) the area where their surfaces
contact, or make the area <em>seem</em> smoother by lubricating it with grease, oil, air,
or smooth leaves.
Answer:
Slavery I assume is the most obvious answer i think of personally
