The term describes the grouping of particles of a certain grain size. There is no internationally valid definition. In German-speaking countries, for example, there are the fraction groups fine soil, fine skeleton and coarse skeleton, which in turn are subdivided into main fractions (e.g., clay, silt, sand, gravel).
The granulation describes the classification of grains and particles according to their grain size. The grain sizes are divided into the following groups (from large to small): stones, gravel, sand, silt and clay. The science of determining, describing and interpreting the grain size is called granulometry.
The goal of green manure is to improve the soil. Certain plants are left in the field or planted for this purpose and then incorporated into the surface of the soil or used for mulching. This improves soil life, builds up humus, protects the soil from erosion, improves the supply of nitrogen to the following
The sun’s rays hit the earth in the form of ultraviolet radiation. A part is reflected. On their way into the atmosphere, gases such as carbon dioxide (CO2), ozone and water vapour are reflected back to earth in the form of infrared radiation. This effect warms up the earth like a greenhouse and ensures a
Greenhouse gases reflect sunlight bouncing off the Earth, acting like greenhouse glass. Air pollutants that affect the climate include carbon dioxide (CO2), which is produced when fossil fuels are used, methane (CH4), nitrous oxide (N2O) and fluorinated gases (F-gases).