Vocabulary Review

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Across
  1. 4. any trait that gives an advantage in survival
  2. 5. envelope of gasses surrounding earth
  3. 12. what scientists measure in a test
  4. 14. carefully planned,controlled fire
  5. 16. 1+ communities of different species interacting
  6. 17. set of physical conditions in lower atmosphere
  7. 18. using oxygen and glucose making energy
  8. 19. factual information collected by scientists
  9. 20. important factor in regulating growth
  10. 21. science that studies how living things interact
Down
  1. 1. managed forest with only 1 or 2 species
  2. 2. gradual change in species composition
  3. 3. what is being tested
  4. 6. states the how or why
  5. 7. variety of life on Earth
  6. 8. both species benefit
  7. 9. disease causing agent
  8. 10. states the facts
  9. 11. pattern of atmospheric conditions over years
  10. 13. cold,low humidity storage to preserve genes
  11. 15. removal of large expanses of forest