Soil and Agriculture

4. "A way of supplying water to an area of land."
5. "A farming method that helps prevent soil degradation by leaving crop residues in the field between seasons."
6. "The complex plant-supporting system consisting of disintegrated rock, organic matter, water, gases, nutrients, and microorganisms."
11. "Soil with a relatively even mixture of sand, silt, and clay, considered ideal for gardening and agricultural."
14. "The buildup of salts in surface soil layers, a problem often seen in arid areas."
16. "Rows of trees or other tall plants that are planted along the edges of farms to break the wind."
18. "The practice of growing a series of different types of crops in the same area across a sequence of growing seasons."
20. "Type of agriculture where families produce only enough food for themselves."

1. "The process by which dissolved particles move down through horizons and may end up in drinking water."
2. "The practice of protecting Earth's natural resources for sustainable use."
3. "The large increase in crop production in developing countries achieved by the use of fertilizers, pesticides, and high-yield crop varieties."
7. "The process by which fertile land becomes desert; typically as a result of drought, deforestation, or inappropriate agriculture."
8. "Cultivation of a single crop in a given area."
9. "Type of fertilizer made from natural organic matter (like manure, compost) as opposed to synthetics."
10. "The fertile material in soil, formed by the partial decomposition of organic matter."
12. "The various mechanical and chemical processes that cause exposed rock to decompose."
13. "Organic matter that has been decomposed and recycled as a fertilizer and soil amendment."
15. "The process of removal of material from one place to another by wind or water."
17. "The upper, outermost layer of soil, usually the most fertile because it contains the most organic, nutrient-rich materials."
19. "Land used for grazing livestock."