Human Impacts on Land and Water (pages 123-143)

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Across
  1. 4. ______________ and trees are renewable only if they are replaced as fast as they are used (page123)
  2. 6. Land reclamation is very _________ and difficult (pg128)
  3. 9. The ocean is a _________________ body of water(page142)
  4. 11. Trash and _____________ are hazardous to marine animals (page140)
  5. 13. Farmers add ______________ to the soil to provide the needed nutrients (page126)
  6. 16. Instead of dumping waste products directly into the environment manufacturers can _____________ them (page143)
  7. 17. _________-cutting is the the process of cutting down all the trees in an area at once (page 130)
  8. 18. As the human population grows, more and more land is _____________ and built up with human structures (page124)
  9. 20. The use of land to produce food is called_______________ (page124)
  10. 21. ___________ water is a limited resource (page137)
  11. 25. ________-cutting is the process of cutting down only some trees in a forest and leaving a mix of tree sizes and species behind (page131)
  12. 26. Land reclamation is the process of restoring land to a more _________________ state (page 128)
  13. 28. One cause of moisture loss or desertification is _________________ (page127)
  14. 29. Planting __________ tree to replace each one that is cut down ensures that the overall yield remains constant (page132)
  15. 31. Metals and other resources are obtained through _________________ (page124)
  16. 32. The water and human wastes that are washed down sinks, showers and toilets (page138)
Down
  1. 1. The layers of soil go Litter, then topsoil, then _______________, then bedrock (page125)
  2. 2. These can eliminate the use of nonrecyclable materials (page143)
  3. 3. Underground oil and gas leaks are a source of water pollution, they can seep into groundwater making it unfit to _______________ (page139)
  4. 5. the removal of forests to use the land for other reasons page124)
  5. 7. Sustainable use of a resource means using it in ways that maintain the resource for all ____________ generations (page 129)
  6. 8. These are one of the worst environmental hazards that can occur (page142)
  7. 10. If humans use nonrenewable resources faster than they are can be ______________ then they will be used up (page123)
  8. 12. When heat negatively affects bodies of water is known as _____________________ pollution (page139)
  9. 13. Aquaculture is a practice that raises and uses fish for ____________ (Page141)
  10. 14. Animal waste, fertilizers, and pesticides are ___________ of pollution (page138)
  11. 15. Some areas have an abundant supply of freshwater while in other areas it is quite _________________ (page137)
  12. 19. Anything that we use that occurs naturally in the environment (page123)
  13. 22. Forests can be managed to provide a sustainable _______________ (page132)
  14. 23. When water usage is poorly managed it can lead to water ________________ (page137)
  15. 24. Decomposers in the soil break down ____________ organisms (page126)
  16. 27. Plant ________________ growing deep into the soil help to hold it in place (page126)
  17. 30. Other words for wetlands are __________, marsh, or swamp (page 129)