Answer: I believe you need to examine the layers, the color, texture.
It removes the most fertile part of soil.
An area where soil has eroded experience loss of nutrients. The topmost layer of soil is called the topsoil and is the most fertile. Soil erosion results in the loss of soil fertility and makes the land barren
The main cause of soil erosion is the removal of vegetation, which exposes the topsoil to water and wind. Wind and water are the main agents of soil erosion.
Water erosion can be sheet erosion, rill erosion, gully erosion or riparian erosion.
○ 
motive
○ 
observation
○ 
reaction
◉ 
stimulus
The cue or combo of cues that produces a response is called a 
, which is a thing or event that causes a specific reaction in an organ or tissue.
The two main stages are :
growing stage- Interphase and actual cell division - mitotic phase
