Lesson 2 Changes Affect Organisms

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Across
  1. 3. animals depend on plants for _____
  2. 4. organisms ___ and grow in number
  3. 5. Ranger need to ____ people and animals during a forest fire
  4. 9. _______ depend on one another
  5. 13. planting _____ are helpful to an ecosystem
  6. 15. changes affect ______
  7. 16. Park rangers normally work in ___ or national parks
  8. 17. _____ change ecosystems more than organisms do
  9. 18. when park rangers have to find animals a find a new home or location again
  10. 19. different parts of an ecosystem _______
  11. 20. trees and other plants give off ____ that animals need to survive
  12. 22. grass needs soil, _____, nutrients, air, and water
Down
  1. 1. when an area is very dry and doesnt have water
  2. 2. without ____ the population of animals would rapidly increase
  3. 6. park rangers work _______ a lot of the time
  4. 7. _____ make up an ecosystem
  5. 8. state with wildfires
  6. 10. living things depend on and affect _______ things
  7. 11. ______ have changed our environment
  8. 12. plants use ____ to grow
  9. 14. birds and _____ _______ usually survive wildfires
  10. 21. it can take ____ for an ecosystem to recover from a natural disaster