3. Organic matter: this is made by the remains of living things. The descomposition of these remains creates humus Inorganic matter: this is made by non living things 1.-Parts of the soil
4. 2.-Types of soil There are different types of soil according to the amount of humus an water it has. a) Fertile soil b) Poor soil c) Arid soil
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6. b) Poor soil Soils with little humus are poor and noot good for cultivation .
8. 3.-Soil layers Topsoil: It is made up of water, sand and humus Subsoil: It is made up of sand and rocks Bedrock: It is made up of bigger rocks.
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10. Soil and vegetation - Plants benefit for the soil. The soil provides the water and nutrients plant need to grow - The soil benefits from plants. Plants help make humus
11. The soil and fauna - Animals benefit from the soil. Some animals like worms and rabbits live inside the soil - The soil benefits from animals. Animals create humus with their excrement.
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