what keeps the soil in place? well with my no life considering i am 34 and live with my parents, still my 12 years of research of soil i have found out that the roots keep them in place.
Gravity
Ground cover
the roots keep the soil from moving around and keeps them "anchored down".
Tree roots hold the soil in place, the roots take up water and send it up the tree and out the leaves (evapotranspiration), which keeps the soil from getting saturation - saturated soil can slide.
If there is no air in the soil, the organic matter in the soil will begin to rot. It is called anerobic decomposition. Air in the soil allows for drainage, gives roots a place to grow, and keeps methane from building up by allowing it a ready escape.
humus
Your haur keeps your hair in place as it is imbedded into your brain!
Worms and fungi. When rivers flood the create silt a rich soil
permanently frozen soil
It is by respectively amending and covering soil that compost and mulch can prevent soil erosion. Compost puts fresh, nutrient-rich humus into the soil to improve aeration, drainage, fertility, moisture, structure, and texture while mulch holds soil in place, keeps moisture and temperature at proper levels, and puts nutrients back into the soil as it wears out after about 3+ years.
yes soil from different places is different
Roots help keep the soil in place.
because it has help from all the other soils