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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

cutan

Earth science; Soil science

A modification of the texture, structure, or fabric at natural surfaces in soil materials due to concentration of particular soil constituents or in situ modification of the ...

biomass

Earth science; Soil science

(i) The total mass of living organisms in a given volume or mass of soil. (ii) The total weight of all organisms in a particular environment.

chemisorbed phosphorus

Earth science; Soil science

Phosphorus adsorbed or precipitated on the surface of clay minerals or other crystalline materials.

calcium magnesium ratio

Earth science; Soil science

A statement of the relative proportions of available calcium and magnesium in the soil.

large-scale map

Earth science; Soil science

A map having a scale of 1:100 000 or larger.

sedimentary rock

Earth science; Soil science

A rock formed from materials deposited from suspension or precipitated from solution and usually being more or less consolidated. The principal sedimentary rocks are sandstones, ...

selective cutting

Earth science; Soil science

A system of cutting in which trees, usually the largest, or small groups of such trees are removed for commercial production or to encourage reproduction under the remaining stand ...