what is drakness layer of soil
Answers
Answer:
Most soil profiles have a surface layer of organic material and two or three layers of mineral materials. These are called the horizons of a typical soil profile. The uppermost horizon is called the “organic” horizon or “O” horizon. ... The organic materials in this layer decompose into nutrients that enrich the soils.
drakness = darkness
Answer:
A HORIZON- This is the layer that we call "topsoil" and it is located just below the O Horizon. This layer is made up of minerals and decomposed organic matter and it is also very dark in color. This is the layer that many plants roots grow in.
Explanation:
A soil horizon is a layer parallel to the soil surface whose physical, chemical and biological characteristics differ from the layers above and beneath. Horizons are defined in many cases by obvious physical features, mainly color and texture.
The A horizon is the top layer of the mineral soil horizons, often referred to as 'topsoil'. This layer contains dark decomposed organic matter, which is called "humus". ... The A is a surface horizon, and as such is also known as the zone in which most biological activity occurs.
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