Answer: There are various means by which the environment can be affected. These can be human activities or natural calamities.
Landslide is one of the major disaster which can be intensified by human activities.
Mining, deforestation, construction are some of the activities that can loosen the soil which aids to intensify the landslide.
Once the landslide is occurring the loosen soil intensifies the landslide. So, the activities that loosens the soil must be avoided to prevent landslide frequently.