True that is true and read a book about it
Answer:
3
Explanation:
The process is called triangulation and involves at least 3 stations.
The principle is that from each station, you get a distance location from that station of the event. Then from each station you make a circle with the distance measured at that station.
All three circles done form the monitoring station will meet at a point somewhere between those three stations, and you'll get your location.
That's the triangulation process. You do need 3 points for a precise reference, if you have only 2, you are usually left with 2 possibilities.
Creep - this type of mass wasting occurs during a long period of time (with velocities recorded at only a millimeter per year. The steeper the slope of the land gets, the faster the movement. The gradual increase and decrease of temperature contribute to this type.
Flows - the fluid-like motion of the soil and regolith. Examples of which are mudflows and lahars. This is mainly due to the presence of water in the material.
Landslide - the accelerated movement of earth material down a slope. The most common cause is accumulated rainfall over a period of time, albeit human factor comes into play as well, such as deforestation and blasting.
I hope this answers your question.