Landslide is a hazardous event which occurs when the mass of rock or debris flows downward in a typically slopy area. It occurs under the effect of the gravitational force. Soil creep is a phenomena of the downward movement of the soil, mud and sediments down the slope. It will promote landslide in a region.
In a habitat there are red bugs and green bugs. The birds prefer the taste of the red bugs, so soon there are many green bugs and few red bugs. The green bugs reproduce and make more green bugs and eventually there are no more red bugs.
