Food Chains and Food Webs

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Across
  1. 3. an organism that can produce its own food using light, water, carbon dioxide, or other chemicals
  2. 7. an animal that is caught and killed by another for food
  3. 10. an animal that preys on others
  4. 11. an organism that makes its own food
  5. 12. A bacteria commonly found in the lower intestine of warm-blooded organisms.
  6. 13. an organism derives its nutritional requirements from complex organi substances
  7. 15. an interaction between different species that results in positive effects on per capita ra microorganismd/or survival of the interacting population
  8. 18. an association between 2 organisms in which one benefits and the other derives neither benefit nor harm
  9. 19. hierarchical levels in an ecosystem
  10. 20. an organism that eats meat
Down
  1. 1. The process by which green plants, algae, diatoms, and certain forms of bacteria make carbohydrates from carbon dioxide and water in the presence of chlorophyll, using energy captured from sunlight by chlorophyll, and releasing excess oxygen as a byproduct.
  2. 2. plant cell organelles that convert light energy into relatively stable chemical energy via the photosynthetic process.
  3. 4. eats both plants and animals
  4. 5. representation of total living biomass or organic matter present at different trophic levels in an ecosystem
  5. 6. an organism that only eats plants
  6. 8. an antibiotic or group of antibiotics produced naturally by certain blue moulds, now usually prepared synthetically
  7. 9. a series of organisms dependent on the next as a source of food
  8. 14. the action of breathing
  9. 16. all food chains in a single ecosystem
  10. 17. a microorganism especially a bacterium causing disease or fementation