GEOLOGY

Detailed explanation-1: -Deforestation adds to landslides because the roots of trees and plants hold the soil. On clearing the vegetation, the mountain slope loses its protective layer due to which the rain water flows with very high speed on the slopes which results in landslides.

Detailed explanation-2: -Many human-caused landslides can be avoided or mitigated. They are commonly a result of building roads and structures without adequate grading of slopes, poorly planned alteration of drainage patterns, and disturbing old landslides.

Detailed explanation-3: -These factors include both natural events such as geological weathering and erosion and human-related activities such as deforestation and changes made to the flow of groundwater. Destruction of vegetation by droughts, fires, and logging has been associated with increased risk for landslides.

Detailed explanation-4: -Human-Induced Landslides (HIL) refer to landslide events that are directly triggered or partially aggravated by anthropic activities. Most of them are the results of anthropogenic factors such as modification of the topography, change of the water circulations, land use changes, ageing of infrastructure, etc.