Across
- 6. a substance that is toxic to plants and is used to destroy unwanted vegetation
- 8. plowing along the contours of the land in order to minimize soil erosion
- 10. a soil layer that is dark in color because of the mixing of humus and minerals
- 11. the action of clearing a wide area of trees
- 13. is the salt content in the soil which can be caused by natural processes such as mineral weathering or by the gradual withdrawal of an ocean
- 14. the lowermost zone of soil, consisting mainly of unconsolidated, weathered rock fragments
- 15. a pesticide that has a small coverage range
- 16. something is filled or flooded with water that it becomes heavy and manageable
- 19. is a broad-based approach that integrates practices for economic control of pests
- 27. the layer of unconsolidated rocky material covering bedrock
- 29. substances that are derived from the remains or byproducts of natural organisms which contain the essential nutrients for plant growth
- 30. the process by which fertile land becomes desert, typically as a result of drought, deforestation, or inappropriate agriculture
- 31. a chemical that is used when many different species of organisms are causing harm or when the specific organism causing harm is unknown
- 32. is the displacement of fertilizer components, via rainwater and mechanical irrigation, from their intended use on a residential or commercial site, to local water sheds and reservoirs
- 34. inadequate nutrition caused by the lack of a balanced diet or by disorders of the digestive system in which the nutrients from food cannot be absorbed properly
- 37. is a form of malnutrition in which the intake of nutrients is oversupplied
- 38. a layer in the soil profile
- 39. severe undernourishment causing an infant's or child's weight to be significantly low for their age
- 42. an area that provides shelter from the wind and prevents soil from erosion like a row of trees
- 43. is a severe form of malnutrition produced by inadequate amounts of protein in the diet
Down
- 1. the cultivation of a single crop in a given area
- 2. lack of proper nutrition by not having enough food that contain substances that help with health and growth
- 3. a large increase in crop production in developing countries achieved by the use of fertilizers, pesticides, and high-yield crop varieties
- 4. a soil layer that has a high percentage of organic matter
- 5. the second or middle zone of soil with, characterized by an accumulation of soluble or suspended organic material, clay, iron, or aluminum
- 7. is self-sufficiency farming in which the farmers focus on growing enough food to feed themselves and their families
- 9. make or form into a number of level flat areas resembling a series of steps
- 12. is a widely used method of growing food in which wild or forested land is clear cut and any remaining vegetation burned
- 17. a lack of vitamin A in the body
- 18. the rearing of aquatic animals or the cultivation of aquatic plants for food
- 20. is a way of growing crops or pasture from year to year without disturbing the soil through tillage
- 21. used as an insecticide and it is composed of carbon, chlorine, and hydrogen
- 22. the system of rotating crops in a definite order on the same ground, especially to avoid depleting the soil and to control weeds, diseases, and pests
- 23. is a diagram which shows how each of these 12 textures is classified based on the percent of sand, silt, and clay in each
- 24. is fertilizer mined from mineral deposits or manufactured from synthetic compounds
- 25. was an American marine biologist and conservationist whose book Silent Spring and other writings are credited with advancing the global environmental movement
- 26. wear away or change the appearance or texture of by long exposure to the air
- 28. a condition marked by a deficiency of red blood cells or of hemoglobin in the blood, resulting in pallor and weariness
- 33. a chemical that destroys fungus
- 35. a substance used to kill insects
- 36. the wearing away of topsoil
- 40. abnormal enlargement of the thyroid
- 41. is the result of a laboratory process where genes from the DNA of one species are extracted and artificially forced into the genes of an unrelated plant or animal