About a thousand things ...
but a simple answer is sand (ground up rock) and worm poo.
In good topsoil there are hundreds or thousands of different organisms all working to break down organic matter.
Rich Topsoil Over Clay Is Found In A Deciduous Forest
Topsoil . (:
Topsoil is rich in nutrients because it is necessary for plant nutrition. Topsoil has about 17 different nutrients such as potassium, nitrogen and phosphorus.
Deforestation can affect topsoil in two significant ways. First leaves and branches that fall from trees as well as fallen trees themselves decompose. This decomposed matter is a major component of topsoil. If an area is deforested then much less new topsoil will be formed. Secondly, when an area is deforested wind and rain can cause the unprotected topsoil to be blown or washed away.
i honestly don't know
Dig under the grass and topsoil will be under the grass. Topsoil is that is mainly sold in bags for your gardening.
Dig under the grass and topsoil will be under the grass. Topsoil is that is mainly sold in bags for your gardening.
Horizon A
Rich Topsoil Over Clay Is Found In A Deciduous Forest
it is made of rocks
The A horizon.
topsoil
The construction had caused all the topsoil to wash away. The rich topsoil of the prairies made good field for the crops.
Topsoil . (:
topsoil.
They are both made with the same substance but the topsoil has newer soil than the subsoil.
They are both made with the same substance but the topsoil has newer soil than the subsoil.