Question

describe land slide who it affect human life

Answer 1

Landslides are caused by rain, earthquakes, volcanoes, or other factors that make the slope unstable. Geologists, scientists who study the physical formations of theEarth, sometimes describelandslides as one type of mass wasting. A mass wasting is any downward movement in which theEarth's surface is worn away.
in some cases humanactivities can be a contributing factor in causing landslides. ... They are commonly a result of building roads and structures without adequate grading of slopes, of poorly planned alteration of drainage patterns, and of disturbing old landslides.

Answer 2

The term landslide or, less frequently, landslip,[1] refers to several forms of mass wasting that include a wide range of ground movements, such as rockfalls, deep-seated slope failures, mudflowsand debris flows. Landslides can occur underwater, in which case they are called submarine landslides, and in coastal and onshore environments. Although the action of gravity is the primary driving force for a landslide to occur, there are other contributing factors affecting slope stability. Typically, pre-conditional factors build up specific surface or sub-surface conditions that make a slope prone to failure, whereas the actual landslide often requires a trigger before being released.