Environmental crossword

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Across
  1. 3. breaks down dead organisms for nutrients.
  2. 5. the living parts of an ecosystem.
  3. 7. renewable material that comes from plants and animals.
  4. 9. large region with a certain climate and certain types of living things.
  5. 12. states how efficient an ecosystem is.
  6. 13. an organism that uses photosynthesis for their main source of food.
  7. 14. water movement from soil to plants.
  8. 16. an organism that has bee around for a long time and is harmful to water ecosystems.
  9. 17. occurs when the environment becomes enriched with nutrients.
  10. 18. microscopic organisms that drift around in water.
  11. 19. make their own food.
  12. 20. the process where liquid gets turned to gas.
Down
  1. 1. when an organism makes food using chemicals as the energy source.
  2. 2. eats plants
  3. 4. a community of biological, physical, and chemical components.
  4. 6. non-living part of an ecosystem.
  5. 8. process of turning nitrogen components into ammonia.
  6. 10. sheds its leaves annually
  7. 11. the part of the water cycle where it is liquid.
  8. 15. can produce their own food using light, water, or carbon dioxide.