Across
- Cropland left idle in order to restore productivity through accumulation of moisture
- The relative proportions of sand, silt, and clay particles in a mass of soil.
- Waterlogged, spongy ground, consisting primarily of mosses and decaying vegetation.
- The downward movement of water through the soil.
- Layers of soil occurring in arctic regions in which a temperature below freezing has existed continuously for a long time.
- Application of water to soils to assist in production of crops.
- Rock of any origin altered in mineralogical composition, chemical composition, or structure by heat, pressure, and movement.
- A soil through which water, air, or roots penetrate slowly or not at all.
- A rock fragment larger than 2 feet in diameter.
Down
- The rapid downhill movement of a mass of soil and loose rock, generally when wet or saturated.
- The solid rock that underlies the soil.
- The upper part of the soil which is the most favorable material for plant growth.
- Rock made up of particles deposited from suspension in water.
- A shallow depression from which all or most of the soil material has been removed by wind.
- The wearing away of the land surface by water, wind, ice, or other geologic agents.
- The exchange of air in soil with air from the atmosphere.
- Many fine soil particles held in a single mass or cluster.
- Runoff, or surface flow of water, from an area.
- A miniature valley with steep sides cut by running water and through which water ordinarily runs only after rainfall.
- A natural, three-dimensional body at the earth’s surface which supports life (plant, animal or microbial)