Vocab day 2

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Across
  1. 3. when grass land becomes desert.
  2. 5. Fog combined with air pollutants
  3. 8. Cutting down a lot of tress in one area
  4. 10. The tinning of the ozone layer
  5. 11. The cultivation of a single crop
  6. 12. The process of getting coal
  7. 13. Genetically modified organism
Down
  1. 1. Harmful things getting into the environment
  2. 2. People Moving to cities
  3. 4. The science of farming
  4. 6. Caring for our forests
  5. 7. When argicultural technologies increased food production
  6. 9. Oceans pH level Decreasing