EARTH SCIENCE 12C REVIEW QUESTIONS AND ANSWERS 2024|GUARANTEED SUCCESS
Soil The loose, weathered material on Earth's surface in which plants can grow. Horizon a layer of soil Brainpower 0:07 / 0:15 Humus material formed from decaying leaves and other organic matter Loam An especially fertile topsoil containing about equal parts of sand and silt and about half as much clay; often contains humus. Soil conservation a method to maintain the fertility of the soil by protecting the soil from erosion and nutrient loss Pedologists scientists who study soils, soil formation, and erosion A-horizon topsoil B-horizon subsoil C-horizon The least-weathered soil horizon, which always occurs beneath the B horizon and is similar to the parent material.
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