5.03 ENR Science

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Across
  1. 4. Topsoil
  2. 5. moisture from rain or snow.
  3. 8. particles cling together in angular aggregates –typical of soils with high clay content.
  4. 10. The number of wildlife each habitat can support throughout the year.
  5. 11. recommended to remove some trees when competition slows the growth of all trees.
  6. 14. the best land for the most intensive cultivation of field crops with the fewest limitations and can be planted year after year.
  7. 16. as a material it dissolves or otherwise changes most other materials.
  8. 18. a cropping technique used to reduce soil erosion.
  9. 20. a system of harvesting trees where all of the trees in an area are removed.
  10. 21. best suited for wildlife and recreation.
  11. 22. Selection cutting is the harvesting method recommended for a forest of trees consisting of different ages and species.
  12. 23. least expensive method to replace harvested trees, trees reseed themselves
  13. 25. changing from a liquid to a gas.
Down
  1. 1. No area of U.S. land is more important to wildlife, land that is poorly drained- swamps, bogs, marshes, etc
  2. 2. the tendency of soil particles to cluster together and function as soil units called aggregates that leave pore space to store air, water, nutrients, and allow root penetration
  3. 3. water that plant roots can absorb.
  4. 6. used to reduce the risk of wildfires by eliminating forest litter (fuel).
  5. 7. smallest soil particle
  6. 9. Largest soil particle
  7. 12. the cycling of water between water sources, atmosphere, and surface areas.
  8. 13. very steeply sloping and best used for planting trees.
  9. 15. scientific forest management techniques
  10. 17. Intermediate sized soil particle
  11. 19. The rate of movement of air and water through the soil
  12. 24. associated with sandy soils.
  13. 26. space to store air, water, nutrients, and allow root penetration.