words to know

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Across
  1. 2. all organisms interacting with environment
  2. 4. cannot make their own food
  3. 9. largest population size an environment can support
  4. 11. organisms role in ecosystem
  5. 12. sum of all different species and habitats make up the earth
  6. 13. one organism benefits, other unaffected
  7. 14. makes their own food
  8. 16. study of _____
  9. 19. living
  10. 20. gradual change in communities after a disturbance
Down
  1. 1. break down dead organisms
  2. 3. shows amount of energy in each level of food chain
  3. 5. factor causing growth of population to decrease
  4. 6. group of similar organisms
  5. 7. one organism benefits, other harmed
  6. 8. relationship between 2 species
  7. 10. both organisms benefit
  8. 15. all members of one species on an area
  9. 17. non living
  10. 18. all living organisms interacting with each other