About 70,700 results
Open links in new tab
  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 definitions …

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

    Jan 2, 2026 · The evolution of soils and their properties is called soil formation, and according to pedologists, five fundamental soil formation processes influence soil properties.

  3. Soil Basics | Soil | Illinois Extension | UIUC

    Soil is the foundation on which we grow, live, and work. Soil is a natural resource on this planet as critical as clean water and air and is the medium to anchor plant roots for plants to obtain nutrients, …

  4. Soil Survey Map - ArcGIS

    Explore detailed soil survey maps and data using the ArcGIS Soil Survey Map application.

  5. 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.

  6. Soil Composition and Types - Geology Science

    Oct 29, 2025 · Soil is a complex natural resource that plays a vital role in supporting life on Earth. It acts as a medium for plant growth, a habitat for various organisms, and a crucial component of the Earth's …

  7. 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 activities all affect soils.

  8. Soil Science 101 | SoilNOW - Cornell University Blog Service

    Soil is the only ecosystem that integrates the four major earth systems — the lithosphere, biosphere, atmosphere, and hydrosphere. It is the living, breathing skin of our earth, and without it life as we …

  9. SoilWeb: An Online Soil Survey Browser | California Soil Resource Lab

    Welcome This interactive map allows you to explore USDA-NCSS soil survey data for locations throughout most of the U.S. It is compatible with smartphones, tablets, and desktop computers. …

  10. 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...