food chain and food webs

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Across
  1. 3. an organism that can create its own food
  2. 7. an animal that is hunted by predator
  3. 10. an animal that eats prey
  4. 11. an organism that makes its own food through processes
  5. 12. a bacteria that is commonly found in the lower intestine of warm-blooded organisms
  6. 13. an organism that cannot create its own food and must consume it
  7. 15. association between organisms of two different species in which each benefits
  8. 18. an association between two organisms in which one benefits and the other derives neither benefit nor harm.
  9. 19. the position of an organism in the food chain and ranges from a value of 1 for primary producers to 5 for marine mammals and humans
  10. 20. an animal that eats meat
Down
  1. 1. the process in which light energy is converted to chemical energy in the form of sugars
  2. 2. an organelle within the cells of plants and certain algae that is the site of photosynthesis
  3. 4. an animal that eats both plants and meat
  4. 5. a graphical portrayal of biomass present in a unit of the territory of different trophic levels
  5. 6. an animal that eats plants
  6. 8. an antibiotic. It is used to treat infections caused by bacteria. It does not work on viral infections
  7. 9. a simple flow of energy
  8. 14. exchange of oxygen and carbon dioxide
  9. 16. interconnected food chains in one
  10. 17. organisms that are too small to be seen without using a microscope