Lesson 2 Changes Affect Organisms

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