Unit 4 Environmental Science

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Across
  1. 3. the degradation of the earth's land, usually by improper disposal of waste.
  2. 4. process where land turns into desert due to erosion.
  3. 5. harmful substances in the air from factories and vehicles.
  4. 10. contamination of lakes, rivers, and oceans.
  5. 11. fog mixed with smoke and pollutants.
  6. 13. the practice of managing and caring for forests.
  7. 16. the decrease of the oceans' PH.
  8. 18. early 20th century agricultural shift that boosted crop yields.
Down
  1. 1. increases in the number of the population.
  2. 2. process that cleans used water before it returns to nature.
  3. 6. the process of making an area more urban.
  4. 7. the process of obtaining coal or other minerals from a mine.
  5. 8. depletion thinning of the protective layer that shields us from UV rays.
  6. 9. genetically modified crops for improved traits
  7. 12. farming practice of growing one crop over a large area.
  8. 14. process of removing salt from seawater.
  9. 15. catching fish from the water.
  10. 17. how we rely on H20 from drinking to farming.