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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. Pennsylvania Soils - Natural Resources Conservation Service

    Soil is not an inert growing medium – it is a living and life-giving natural resource. It is teaming with billions of bacteria, fungi, and other microbes that are the foundation of an elegant …

  4. How to Interpret Soil Test Results | Yard and Garden

    When you receive the results from your soil test, it can be overwhelming to determine what to do next. Learn how to interpret the report and use pH, CEC, organic matter, and other test results …

  5. Soil Composition and Types - Geology Science

    Nov 4, 2024 · Understanding soil composition and types is essential for sustainable agriculture, land management, and environmental conservation. This article delves deeper into the …

  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. What Are Soils? | Learn Science at Scitable - Nature

    In this article readers are introduced to the many facets of soils - their unique characteristics and diversity, the ecosystem services that soils provide, and their use and misuse. Soils are...

  8. Soil and Water Testing Information - Penn State Extension

    The report includes research-based recommendations for the type and amount of nutrients, if needed, to adjust your soil for the optimal growth of your specific garden.

  9. Soil Composition - Education

    Oct 19, 2023 · Soil contains air, water, and minerals as well as plant and animal matter, both living and dead. These soil components fall into two categories. In the first category are biotic …

  10. Garden Soil | Lowe's

    Nurture your plants with nutrient-rich garden soil. Explore organic, potting, and raised-bed soils available now at Lowe 's.