Jacobs ecology puzzly puzzle

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Across
  1. 1. they look for food or items on the ground instead of fighting for it
  2. 3. a organism that only eats animals
  3. 6. a planet containing the ecosystem
  4. 8. a web of animals showing the food each animal needs
  5. 10. a animal hunting for prey
  6. 11. a smaller population with fewer people
  7. 12. a unit or 1 thing that interacts with the environment
  8. 13. a organism that needs other things to survive
  9. 14. a person with a parasite or thing on it
  10. 15. a organism that only eats plants
  11. 17. animals that help fertile the environment and help it grow
  12. 18. a non-living thing in a ecosystem
  13. 19. a group of 1 species living together
  14. 20. a animal running or hiding from predators
  15. 21. a chain of levels for animals to eat
Down
  1. 2. a organism that eats/takes the things people sell or give
  2. 4. a living thing in a ecosystem
  3. 5. a place that a living thing is living in
  4. 7. relations of organisms to one another and to their physical surroundings.
  5. 9. a organism that eats plants and animals
  6. 15. a organism deriving its nutritional requirements from complex organic substances.
  7. 16. a smaller food web showing specific animals and what they eat
  8. 18. a organism that can make organice substances from inorganic substances