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May 1, 2024 · Learn about soil, the biologically active, porous medium that has developed in the uppermost layer of Earth’s crust. Explore soil structure, composition, classification, and role in the global ecosystem, as well as soil erosion and pollution.
- Garrison Sposito
Soil, also commonly referred to as earth or dirt, is a mixture of organic matter, minerals, gases, liquids, and organisms that together support the life of plants and soil organisms. Some scientific definitions distinguish dirt from soil by restricting the former term specifically to displaced soil.
Learn about the definition, ingredients, characteristics, and diversity of soils, the dynamic and diverse natural systems that lie at the interface between earth, air, water, and life. Explore how soils are formed, classified, mapped, and managed, and how they provide critical ecosystem services for humanity.
Learn what soil is, how it forms, and what types and properties it has. Explore the soil classification system, soil profiles, and soil ecosystem services.
Oct 19, 2023 · Learn about the biotic and abiotic factors that make up soil, and how they vary across different regions and ecosystems. Find out how soil scientists test and measure soil composition and health.
Learn what soil is, how it is formed by weathering of rocks, and what it is composed of. Find out the importance of soil for plants, animals, and humans, and take a quiz to test your knowledge.
This definition is from Soil Taxonomy, second edition. soil - Soil is a natural body comprised of solids (minerals and organic matter), liquid, and gases that occurs on the land surface, occupies space, and is characterized by one or both of the following: horizons, or layers, that are distinguishable from the initial material as a result of additions, losses, transfers, and transformations of ...
