Soil
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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
Surface-water-gley developed in glacial till in Northern Ireland
Soil measuring and surveying device
A, B, and C represent the soil profile, a notation firstly coined by Vasily Dokuchaev (1846–1903), the father of pedology. Here, A is the topsoil; B is a regolith; C is a saprolite (a less-weathered regolith); the bottom-most layer represents the bedrock.
Desertification
Soil biology
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Soil biology is the study of microbial and faunal activity and ecology in soil. Soil life, soil biota, soil fauna, or edaphon is a collective term that encompasses all organisms that spend a significa
Soil biology is the study of microbial and faunal activity in the soil. This photo shows the activity of both.
The nitrogen cycle
Gopher sticking out of burrow