Life Organisms in their Envionment

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Across
  1. 3. an animal that eats other animals
  2. 4. any organism that can produce its own food
  3. 6. a living thing
  4. 8. a substance that living things need to function and grow
  5. 9. a gas found in Earth's atmosphere
  6. 10. cell structures used for photosynthesis
  7. 14. an animal that eats only plants
  8. 17. one of the gases in Earth's air
  9. 19. to act upon one another
Down
  1. 1. an animal that eats plants and other animals
  2. 2. a way to trace energy between organisms
  3. 4. the process by which plants make food from light
  4. 5. a green material in plant leaves and stems
  5. 7. organisms that feed on plants and other animals
  6. 11. any organism that eats another organism
  7. 12. any organism that is eaten by another organism
  8. 13. the air, water and organisms surrounding a given organism
  9. 15. a sugar that cells use for energy
  10. 16. web a group of food chains that are all connected
  11. 18. a collection of living things and the environment they live in