Units 4 and 5 Review Crossword

12345678910111213141516171819202122232425262728293031323334353637383940414243444546
Across
  1. 1. Land degradation in arid areas resulting in desert-like conditions
  2. 5. Harvesting only certain trees while maintaining forest structure
  3. 8. Volcanic region fed by underlying mantle that is anomalously hot
  4. 9. Controlled fire used to manage forests and reduce fuel loads
  5. 12. Underlying rock from which soil develops
  6. 15. Sudden release of energy in Earth's crust causing ground shaking
  7. 16. Period of agricultural innovation involving high-yield crops, fertilizers, and irrigation
  8. 18. Distinct layers in soil profile (O, A, B, C horizons)
  9. 25. Agricultural practice avoiding synthetic pesticides and fertilizers
  10. 31. Physical and chemical breakdown of rocks
  11. 33. Transport of weathered rock and soil by wind, water, or ice
  12. 34. Layer where minerals accumulate from upper layers
  13. 38. Growing a single crop species over a large area
  14. 39. Breakdown of rock through chemical reactions
  15. 40. (IPM) Pest control strategy combining biological, cultural, and chemical methods
  16. 42. Modified Organisms Organisms whose genetic material has been altered using genetic engineering
  17. 43. Growing multiple crop species together on the same land
  18. 44. Opening in Earth's crust where magma erupts to the surface
  19. 45. Moving livestock to different areas as forage becomes depleted
  20. 46. Chemicals used specifically to kill unwanted plants/weeds
Down
  1. 2. Artificial application of water to crops
  2. 3. boundary Plates moving apart, creating new crust
  3. 4. Clearing land by cutting and burning vegetation to release nutrients into soil
  4. 6. Compression of soil particles reducing pore space
  5. 7. Removal of topsoil by wind or water
  6. 10. Removing all trees from an area at once
  7. 11. Rock formed from cooling and solidification of magma or lava
  8. 13. Accumulation of salts in soil, often from irrigation
  9. 14. Saturation of soil with water, reducing oxygen availability
  10. 17. Upper layer of soil containing most nutrients and organic matter
  11. 19. Organic layer at soil surface
  12. 20. Process of rock formation, breakdown, and reformation
  13. 21. Region around Pacific Ocean with high volcanic and seismic activity
  14. 22. One tectonic plate moving beneath another
  15. 23. boundary Plates moving toward each other, causing subduction or mountain formation
  16. 24. boundary Plates sliding past each other horizontally
  17. 26. Rock formed by heat and pressure altering existing rock
  18. 27. Traditional farming method where land is cleared, farmed for a few years, then abandoned to regenerate
  19. 28. Substances added to soil to increase nutrient availability for plants
  20. 29. Physical breakdown of rock without chemical change(physical)
  21. 30. Rock formed from compressed sediments
  22. 32. Mixture of minerals, organic matter, water, and air supporting plant life
  23. 35. tectonics Theory explaining movement of Earth's lithospheric plates
  24. 36. Chemical substances used to kill or control pests
  25. 37. Surface soil rich in organic matter and minerals
  26. 41. Chemicals used to kill insects