Biology

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Across
  1. 2. Organisms need resources to survive
  2. 4. Maximum healthy ecosystem
  3. 6. One natural community changing into another
  4. 9. A measure of number and variety of organisms in location
  5. 12. First in succession
  6. 13. Biodiversity Index: Species divided by ___
  7. 14. Internal body adaptation
  8. 17. Community of life
  9. 18. Succession leads to __
Down
  1. 1. Biggest water body
  2. 3. Plants making food
  3. 5. Variety of species in a ecosystem
  4. 7. The eaten
  5. 8. Animal acting adaptation
  6. 10. 1 Reason we explore oceans
  7. 11. The eater
  8. 12. _ Succession, Bare rock
  9. 15. _ Succession, Soil
  10. 16. Physical adaptation