biology ecology crossword

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Across
  1. 5. shows the transfer of energy in a community
  2. 8. primary producers
  3. 12. essential processes to human life
  4. 13. is eaten
  5. 14. factors that limit population
  6. 15. environmental factor that shows population growth
Down
  1. 1. number of species
  2. 2. uses another species as a food source
  3. 3. the feeding position in a food chain
  4. 4. consist of food chains
  5. 6. threats to biodiversity
  6. 7. an organism that only eats meat
  7. 9. things from nature
  8. 10. consumers
  9. 11. an increasing impact as the population grows