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2. In soil evaluation, four kinds of limiting layers are recognized: 1) bedrock, 2) dense till, 3) fragipan, and 4) coarse sand and gravel.
7. A soil horizon is a layer parallel to the soil surface whose physical, chemical and biological characteristics differ from the layers above and beneath.
8. the upper 5 to 8 inches of the soil layer the portion of the soil usually tilled.
9. mark with spots or smears of color.
10. the geological process in which earthen materials are worn away and transported by natural forces such as wind or water
12. a landform sunken or depressed below the surrounding area.
13. a generally flat area of land next to a river or stream
14. material carried away from a glacier by meltwater and deposited beyond the moraine.

1. features on the Earth's surface that make up the terrain, such as mountains, valleys, plains or plateaux.
3. soils which are not designated as poorly drained, very poorly drained, alluvial, or flood plain
4. solid rock underlying loose deposits such as soil or alluvium.
5. is the natural or artificial removal of a surface's water and sub-surface water from an area with excess of water.
6. natural process that moves soil from one location to another by wind power
7. rise over run
8. the soil lying immediately under the surface soil.
11. a deposit of clay, silt, sand, and gravel left by flowing streams in a river valley or delta, typically producing fertile soil.