Dirt breaks down everything but plastic and meatal and concrete
A material is biodegradable if it can be broken down by the biological processes. Plants, as well as animal matter are examples of something that is biodegradable, because it can be broken down and absorbed back into the environment.
a element can not be broken down in to smaller such materials
biodegradableAnything organic.
molecule
no unless they are ash
composting
Weathering, erosion.
This is the atom, unbreakable by chemical methods.
weathering
It means that the substance is easily broken down by living things in the environment.
Soil is the result of many factors including natural materials in the area the environment. Add to this a great deal of time when the matter is all broken down and soil is what remains.
Soil forms as rock is broken down by weathering and mixes with other materials on the surface. Soil is constantly being formed wherever bedrock is exposed.Soil horizons form as a rock is broken down by weathering and then mixing with other materials on the surface.