ENVIRONMENTAL

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Across
  1. 1. dissolved oxygen needed by microbes to decompose organic waste
  2. 5. a greenhouse gas
  3. 7. the interaction of a community of organisms with there environment
  4. 8. dense forest found in tropical areas with heavy rainfall
  5. 11. SMOKE CAUSES WHAT
  6. 13. when large habitat are divided into smaller once
  7. 16. 78% of atmosphere is covered with this gas
  8. 17. heat energy stored in the earth
  9. 19. the study of weather
  10. 20. PLANTING OF TREE IS CALLED
Down
  1. 2. the destruction of woodland
  2. 3. the process of plants preparing food using sunlight
  3. 4. effort to protect natural resources
  4. 6. absorb harmful UV rays from the sun
  5. 9. one of the R's
  6. 10. THE LOSS OF WATER FROM PLANTS AND TREE LEAVES
  7. 12. AN EXAMPLE OF RENEWABLE RESOURCE
  8. 14. under threat of extinction
  9. 15. IN THE HILLS FORREST COVER IS EFFECTED BY THIS
  10. 18. THE DISEASE CAUSED by contaminated food and water