Forestry and Agriculture

123456789101112131415161718
Across
  1. 1. when algae bloom and bacteria take over
  2. 3. planting trees in areas where trees are gone
  3. 6. the bottom layer of the forest
  4. 7. fertilizer that is naturally made
  5. 8. agriculture that uses machines
  6. 12. fertilizer that is man made
  7. 14. when animals eat too much grass in an area
  8. 17. when we cut down trees for industrialization
  9. 18. trees that loose their leaves
Down
  1. 2. agriculture that uses animals and humans
  2. 4. the top most layer where some trees poke out
  3. 5. toxins build up in a food web
  4. 9. trees that never loose their leaves
  5. 10. to cut down all trees in an area
  6. 11. areas of grass that are used to feed animals
  7. 13. toxins build up in an organism
  8. 15. the layer of the forest with the most trees
  9. 16. the layer of the forest with plants