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  1. Soil - Wikipedia

    Soil, also commonly referred to as earth, is a mixture of organic matter, minerals, gases, water, and organisms that together support the life of plants and soil organisms. Some scientific …

  2. Soil | Definition, Importance, Types, Erosion, Composition, & Facts ...

    Oct 14, 2025 · Soil 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 injurious wastes, and as a …

  3. Northern Virginia Soil and Water Conservation District

    The Soil Biology Primer, published by the Soil and Water Conservation Society, is an introduction to the living components of soil and how they contribute to agricultural productivity, and air and …

  4. What is Soil? | Natural Resources Conservation Service

    Soil consists of horizons near the Earth's surface that, in contrast to the underlying parent material, have been altered by the interactions of climate, relief, and living organisms over time.

  5. Virginia's Soil Surveys

    Oct 31, 2022 · Soil is a mixture of mineral and organic matter, air, water and living things. There are about 500 different soils in Virginia. A soil survey, made on a county basis, is a scientific …

  6. Soils | U.S. Geological Survey - USGS.gov

    Aug 1, 2025 · Soils are the foundation of terrestrial systems, storing water and nutrients that support forests, crops, and human societies. Geology, climate, ecosystems, and human …

  7. Soil Composition and Types - Geology Science

    Oct 31, 2024 · Understanding soil composition and types is essential for sustainable agriculture, land management, and environmental conservation. This article delves deeper into the …

  8. What is a Soil? - The Institute for Environmental Research and …

    Jun 17, 2025 · Soil erosion is the removal of topsoil by wind or water. It is a major environmental problem, leading to loss of fertile land, water pollution, and sedimentation of waterways.

  9. Sand? Clay? Loam? What Type of Soil Do You Have?

    Learn about soil texture, how it affects plant growth, and what you can do to maximize its ability to help garden plants thrive.

  10. Learn about Soil Types | NESDIS | National Environmental Satellite ...

    Soil is a complex combination of minerals, organic matter, water, and air. Soil is an interface between Earth systems which means it forms between where the geologic (rocks and …