Any flowing water.
Flowing water has great speed.due to this speed, soil also starts running with water causing soil erosion.
yes, flowing water can harm top soil because it carries away the soil with it and causes soil erosion.
permanently frozen soil
A rill
Soil is transported by erosion from flowing water, glaciers and wind (mainly in deserts).
glaciers, flowing water or wind
rills
rill: A tiny groove in the soil made by flowing water.
the earth was broken
a tiny groove in soil made by flowing water
it makes it more moist