1. What Is Soil?
Image: T. Loynachan
Soils-1-1

2. Soil is a layer of unconsolidated material on the Earth’s surface in which plants grow.
Image: Louis Maher
Image: Professional Soil Classifiers Assoc. of Alabama
Soils-1-2

3. Soil is a mixture of mineral grains from the Earth, decomposing organic matter, and voids filled with air or water.
Image: Professional Soil Classifiers Assoc. of Alabama
Soils-1-3

4. Soil is the Earth material that links living things (biosphere), air (atmosphere), water (hydrosphere), and the solid Earth (geosphere).
Image: Bruce Molnia
Soils-1-4