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  1. Dictionary
    soil
    /sɔɪl/

    verb

    noun

    • 1. waste matter, especially sewage containing excrement.

    More definitions, origin and scrabble points

  2. Sep 25, 2024 · Soil, the biologically active, porous medium that has developed in the uppermost layer of Earth’s crust. It is one of the principal substrata of life on Earth, serving as a reservoir of water and nutrients, as a medium for the filtration and breakdown of wastes, and as a participant in the cycling of elements.

  3. www.britannica.com › question › What-is-soilWhat is soil? | Britannica

    Soil is the biologically active and porous medium that has developed in the uppermost layer of Earth’s crust. It serves as the reservoir of water and nutrients and a medium for the filtration and breakdown of injurious wastes.

  4. Sep 25, 2024 · The evolution of soils and their properties is called soil formation, and pedologists have identified five fundamental soil formation processes that influence soil properties. These five “state factors” are parent material, topography, climate, organisms, and time.

  5. Sep 25, 2024 · Soil - Structure, Composition, Properties: The grain size of soil particles and the aggregate structures they form affect the ability of a soil to transport and retain water, air, and nutrients.

  6. Sep 25, 2024 · Soil - Ecosystems, Nutrients, Structure: An ecosystem is a collection of organisms and the local environment with which they interact. For the soil scientist studying microbiological processes, ecosystem boundaries may enclose a single soil horizon or a soil profile.

  7. Soil is a mixture of minerals and organic material that covers much of Earth’s surface. Minerals are bits of rock, and organic material is the remains of living things that have died. Soil is not as solid as rock. It has many small spaces, called pores, that hold water and air.

  8. Sep 25, 2024 · Soil - Texture, Structure, Composition: The two principal systems of soil classification in use today are the soil order system of the U.S. Soil Taxonomy and the soil group system, published as the World Reference Base for Soil Resources, developed by the Food and Agriculture Organization (FAO) of the United Nations.

  9. Chemical element - Soil Composition, Properties, Reactions: Soil is a thin veneer that forms a discontinuous cover on the land areas of the Earth. Its volume and its mass are small in comparison to the major geospheres, but it is of vast importance to man.

  10. soil, The biologically active, porous medium that has developed in the uppermost layer of the Earth’s crust. Soil serves as a natural reservoir of water and nutrients, as a medium for the filtration and breakdown of injurious wastes, and as a participant in the cycling of carbon and other elements through the global ecosystem.

  11. Sep 25, 2024 · Soil - Nutrients, pH, Minerals: The bulk of soil consists of mineral particles that are composed of arrays of silicate ions (SiO44−) combined with various positively charged metal ions. It is the number and type of the metal ions present that determine the particular mineral.

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