Please enable JavaScript.
Coggle requires JavaScript to display documents.
W.E.D (Soil (There are 5 layers of soil. (The Third layer is the sub soil.…
W.E.D
Soil
Soil is the mixture of organic materials, weathered rocks, minerals, water and air that can support plant growth.
There are 5 layers of soil. 
The Third layer is the sub soil. Also known as the B horizon. It is made up of sand, clay, silt, nutrients and minerals.
The fourth layer is the partially weathered rock layer. Also known as the C horizon and Parent Rock. This layer is made up of weathered rock as the name says.
The second layer is the top soil. Also known as the A horizon. This layer is the most fertile soil. It is made up of decayed material.
The first layer is the organic layer. This is also known as the O horizon. It is made up of litter, dead materials, leaves, bugs, and twigs.
Last but not least is the bedrock layer. Also known as the D horizon and the R horizon. This layer has no weathered rocks.
-
Humus is the organic component of soil, formed by the decomposition of leaves and other plant material by soil microorganisms.
-
-
Erosion
-
Some agents are wind, water, and gravity
Humans can cause erosion by carrying a rock to one place to another
Deposition
-
Some agents of deposition are water, gravity and wind