as plants shed leaves they form a loose layer called litter kind of answering it ?
They improve drainage, aerate the soil and introduce leaves and other material from the surface into lower layers.TO make the soil loose,so that water and aircan easily penitrate into itIt makes "breathing tubes" for the earth and it makes the earth healthy.They let all of the plants grow by doing that too because it makes space in the ground for their roots.It eats its way through tiny crushed plant particles excreting its leftovers as fertile soil material.
alfalfa
I think this is the answer: Some soil organisms mix the soil and make spaces in it for air and water. Other soil organisms make humus, The material that makes soil fertile.
Organic matter.
The soil is good for farming because it is fertile
ash and lava
yes because as we mine, the top soil is washed away and this makes the soil in-fertile.
Leaves fall down, and all the minerals they used to make leaves, wil getback to the ground.
The Nile river floods and leaves fertile soil.
No, it is purely mineral with no organic material that would be needed by plants.
Yes, coastal plains typically have fertile soil due to the accumulation of sediment and nutrients carried by rivers and streams. This fertile soil makes coastal plains ideal for agriculture and can support a variety of crops.
the fertile soil and the farmland:)