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Earth science
Any of several geological sciences that are concerned with the earth, its origins, and all of its various structures and physical forms and phenomena.
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Earth science > Soil science 
competition
Earth science; Soil science
A rivalry between two or more species for a limiting factor in the environment.
chemical oxygen demand (COD)
Earth science; Soil science
A measure of the oxygen-consuming capacity of inorganic and organic matter present in water or wastewater. The COD test, like the BOD test, is used to determine the degree of ...
concentrated flow
Earth science; Soil science
A relatively large water flow over or through a relatively narrow course.
site quality
Earth science; Soil science
A relative measure of the vegetative production capacity of a site for a given purpose.
screefing
Earth science; Soil science
A method of preparing forest soils for planting or seeding that consists of mechanically pushing aside the humus layer to expose mineral soil.
Oa horizon
Earth science; Soil science
A layer occurring in mor humus consisting of well-decomposed organic matter of unrecognizable origin (sapric material).
argillic horizon
Earth science; Soil science
A mineral soil horizon that is characterized by the illuvial accumulation of phyllosilicate clays. The argillic horizon has a certain minimum thickness depending on the thickness ...
Sub-categories
- Geology (10953)
- Mapping science (105290)
- Oceanography (12332)
- Physical oceanography (42660)
- Remote sensing (8661)
- Seismology (14406)
- Soil science (29216)