BBC video: Why is soil so important?
https://youtu.be/H_YXEh0eQD4
soil types
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Soil types
The composition of soils is defined by the grain size composition of the mineral soil substance and the associated tactile properties. Depending on the grain size composition, soils can store different amounts of water, have a different nutrient content, are difficult or easy to work and are rooted differently by plants.
Regional Information: Soil types
Regional Information: Soil types Related matters in other countries Typical Soil Types There is a great variety of different soils. Both the parent material, such as rocks and deposits from rivers, and the climate are responsible for their formation. An interaction of many environmental influences and a long period of time results in different soils,
Experiment: Soil analysis
The pupils learn about different types of soil and their composition by means of the finger roll test.