This is the "microscopic" mechanism, on the scale of soil particles.
They cannot reach up and suck water away from the soil particles.
A slower flow will not be able to move soil particles.
Fertile soil particles are not lost by water and wind erosion.
The greater the volume the larger the number of water molecules that do not come in contact with soil particles.
Various farming activities result in the erosion of soil particles.
Erosion of these rocks is brought by rain water and wind loaded with soil particles.
While growing, they may lift or push away small soil particles.
These types of areas don't have any vegetation to hold the soil particles in place.
Most parts of the body are encrusted with soil particles.