Forest Ecology

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Across
  1. 4. Struggle between organisms for resources
  2. 6. Top layer of trees in a forest
  3. 8. Different populations living together
  4. 9. Community of living and nonliving things
  5. 11. Group of the same species in one area
  6. 12. Organism that breaks down dead matter
  7. 14. Layer of plants beneath the canopy
  8. 15. Variety of living things in an area
  9. 16. Organism that eats other organisms
  10. 18. Usual weather conditions of an area
  11. 19. Amount of rain an area receives
  12. 20. Substances needed for growth
Down
  1. 1. Process plants use to make food
  2. 2. Natural change in an ecosystem over time
  3. 3. Trait that helps survival
  4. 5. Ground where plants grow
  5. 7. Natural home of an organism
  6. 10. Animal that hunts other animals
  7. 11. Animal hunted by a predator
  8. 13. Organism that makes its own food
  9. 17. Main source of energy for plants