Ecosystem

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Across
  1. 1. a system of interlocking and independent food chains
  2. 4. living and once living elements in an ecosystem
  3. 5. make food from nutrients and energy from the sun
  4. 7. consumers that eat primary consumers
  5. 8. a series of organisms that eat each other so energy flows from one level to the next
  6. 9. food chains show this
  7. 11. process by which producers make food
  8. 12. consumers that eat only producers
Down
  1. 1. an ecological heirarchy of food interactions
  2. 2. break down dead organisms into abiotic chemicals
  3. 3. non-living elements in an ecosystem
  4. 6. a biological community of interacting organisms and their physical environment
  5. 7. where all energy originates from
  6. 10. what consumers do - the opposite of photosynthesis