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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 > Geology

autotroph

Earth science; Geology

An organism which uses light energy to make its own food, such as plants.

bed roughness

Earth science; Geology

How rough the bed of a river is and hence its effects on river discharge.

bilingual

Earth science; Geology

The ability to use either one of two languages, especially when speaking.

amoeba

Earth science; Geology

A microscopic, one-celled animal consisting of a naked mass of protoplasm.

secondary aquifer

Earth science; Geology

Any aquifer that is not the main source of water to wells in a given area.

aquitard

Earth science; Geology

A material of low permeability that greatly slows the movement of ground water.

axis

Earth science; Geology

The line formed by the intersection of the axial plane of a fold with a bedding plane, marking where the bed shows its maximum curvature.