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Why is soil important to living things? - Coggle Diagram
Why is soil important to living things?
Forming Soil
Knew soil begins when exposed rocks begins to break down, in the of weathering.
Weathering is the process when rocks are broken down into smaller and smaller pieces.
The factors that are going to cause weathering are the changing temperature, water and air.
The particles of rocks, the air, and water are going to make the inorganic part of soil. That is nonliving.
The other part of soil is going to be rich in nutrients , and the plants most have because they need to absorb all nutrients and minerals are going to made of dying material from animal, from other plants and also bacteria and fungi. This is going to be organic.
Kinds of Soils
Silt soil have medium size grains and it will have water but, not so much.
Sandy soil is going to have large grained and hold water poorly.
Clay soil is going to be fine grained and they are going to absorb water so good.
Factors that affect Soil
Climate because if it rains a lot is going to wash away all the minerals from the soil.
Rainfall is going to wash away the nutrients on it.
Kind of rock, that formed the soil is going to be affecting.
Organic Matter that decomposes it
Shape of the land that is going to have soil eroded and depends on the land that is flat.
Soil have three layers:
Subsoil: it has less organic matter, is lighter in color so it will be like a light brown and the minerals are carried away from the topsoil to this soil.
Topsoil: it is a mixture of small rock pieces with humans and other organic matter. Most living things are going to be found in here and this material is going to cover the topsoil. The color is going to be dark.
Parent rock: is made of parent rock material and is going to be having a little amount of organic matter. No life here.
