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Agriscience 4.1 Glossary

Across
The extent of voids or openings in the soil between particles, peds, or clods. The pores hold water and air for absorption by plant roots.
The removal of soluble constituents from soils or other materials by percolating water.
The decrease in volume of sediments from continuous compressive forces from above.
The process of soil deposited due to erosion.
Matter found in or produced by living animals and plants that contains carbon, hydrogen, oxygen, and usually nitrogen and sulfur.
Soil whose properties are dominated by soil minerals, usually containing less than 20% organic matter.
An elongated depression between uplands, hills, or mountains.
Color difference on a mass of moderately poorly drained soil.
The horizon of weathered rock or partially weathered soil material that forms the soil.
To move or transfer from one place to another; cause to change location or displace.
An organism so small that it cannot be seen clearly with a microscope.
Designating the inoragnic nature of a substance.
Any vegetation that grows close to the ground and protecting the soil.
The addition of sediment from flowing water.
To gather or collect.
The process of removing soil from the surface.
Down
Small, mineral, soil particles ranging from 0.5-0.0002 mm in diameter.
The slope of the land and the position of the landscape, i.e. the top of a hill, hillside, or foot of slope.
A size term denoting particles with the diameter of less than 2 microns.
Unweathered hard rock that lies directly beneath the soil layers or superficial geological
An living thing.
Change in form, appearance, nature, or character.
The accumulation of water-worn pebbles larger than 2 mm in diameter.
The mineral and organic surface of earth able to support upland plants and formed by active factors of climate and biospheric influences over time.
The artificial application of water to soil for the purpose of increasing plant production.
The ling-term average weather conditions of a particular area.
Atmospheric action on rock surfaces producing decomposition, disintegration, or alteration of rocks at or close to the earth's surface.
A group of textural classes with particles finer than gravel but coarser than silt (from 2 - 0.4 mm in diameter).
A set of actions where earth and rock material is worn away, loosened, or dissolved and removed from any part of the earth's surface.
Mineral matter of variable composition.