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AR MNR Units 3&4

AR Managing Natural Resources Units 3 & 4

dead plant and animal material in various stages of decay Organic matter
those materials underlying the soil from which the soil was formed Parent material
the layer of natural materials on the earth's surface, containing both organic and inorganic materials, that is capable of supporting plant life Soil
use of soil so damage or loss is minimal or nonexistent Soil conservation
the process by which soil is removed Soil erosion
layers in a mature soil Soil horizon
a vertical section of a soil at a specific site Soil profile
the arrangement of soil particles into shapes and sizes Soil structure
the proportion of sand, silt, and clay in soil Soil texture
an underground stream or pool in sand or gravel layers Aquifer
the water beneath the surface of the earth; found in spaces between rocks and soil particles Groundwater
the water cycle Hydrologic cycle
water that is appropriate for human consumption without further purification or boiling Potable water
water that runs on the earth's surface Runoff water
water on the earth's surface, such as lakes, ponds, and streams Surface water
a colorless, transparent, naturally occurring compound made of hydrogen and oxygen Water
an area of land from which all the water that does not infiltrate the soil runs to a downhill location Watershed
Created by: charissamoore



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