biology

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Across
  1. 6. organisms cp-operate to ensure the survival
  2. 9. +0
  3. 11. plants get energy from the sun
  4. 12. normally a plant at the start of a food web
  5. 13. Any living thing eg: animals and plants
Down
  1. 1. the opposite to abiotic
  2. 2. a balance in an ecosystem so that it remains alive
  3. 3. the cell which photosynthesis occurs
  4. 4. +-
  5. 5. can be first second or third-order in a food web
  6. 7. ++
  7. 8. non-living things
  8. 10. the original energy in the ecosystem
  9. 11. the relationship between two organisms where one of the organism where an organism kills another
  10. 12. animal being hunted