APES Unit 4 Crossword

1234567891011121314151617181920
Across
  1. 2. breakdown of rocks into smaller pieces
  2. 4. chemicals that are toxic to pests
  3. 5. how easily water drains through a soil
  4. 10. occurs when plants are killed by overgrazing and soil compacts so much that it can't hold anymore water
  5. 11. process of soil building up in a soil over time
  6. 12. soil, vegetation, & rock that are removed to extract ore deposits
  7. 15. densely crowded method where animals are fed grains to grow as quickly as possible
  8. 17. layer below topsoil, little-no organic matter, mostly minerals
  9. 18. transport of sediment
  10. 19. liquid layer of magma surrounding Earth's core
Down
  1. 1. sedimentary rock that neutralizes acidic soil
  2. 3. amount of pore space a soil has
  3. 6. bringing in a natural predator as part of IPM
  4. 7. growing different crops in different rows
  5. 8. unintended aquatic organisms caught in nets when fishing
  6. 9. drawing water form the ground and distributing it on fields to increase plant growth
  7. 13. overwatering that saturates soil and restricts oxygen intake for plants
  8. 14. layer of humus (decomposed organic material), aka A horizon, has most biological activity
  9. 16. usable groundwater stores for humans
  10. 20. leftover material removed from valuable metal, stored in ponds at the mine site