Lesson 2 5.4

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Across
  1. 4. organisms that get the energy they need
  2. 8. plain: area along the banks of rivers and streams that is flooded when water levels are
  3. 11. by using a natural predator or disease
  4. 12. reduction burning: regular burning to reduce the amount of fuel available for a fire
  5. 13. species: species that is experiencing a rapid population decline and is in danger of becoming extinct if the drop in numbers.
  6. 14. habitat
  7. 16. organisms that have the same food source and live in the
  8. 17. season: times of the year when fires are most likely
  9. 21. an interaction between two organisms in which one of them benefits but the other one is not affected
  10. 25. the place where all life exists; consists of Earth and its atmosphere
  11. 26. a consumer that eats only other animals
  12. 27. over a long period of time
  13. 28. a scientist who studies
  14. 30. vegetation: native vegetation that remains unchanged when surrounding areas have been changed by activities such as grazing or forestry.
  15. 32. extinction and very small numbers remain
  16. 33. breaking down dead matter and waste products
  17. 34. the last known
  18. 35. control: a method of controlling unwanted
Down
  1. 1. organisms
  2. 2. has died
  3. 3. occur
  4. 5. organisms that must eat other organisms to get the energy and nutrients they need; animals are
  5. 6. the term used to describe differenttypes of living things
  6. 7. characteristics that help an organism to survive in its environment
  7. 9. part of the stem, root or leaf that is able to grow
  8. 10. raised bank built to prevent water reaching buildings
  9. 15. species: species that are close
  10. 18. the chemical in plants that traps energy from the Sun and gives plants their green colour
  11. 19. is not decreasing.
  12. 20. species: species that has low numbers, often spread out over a large area; the
  13. 22. a new plant
  14. 23. ecosystem: an ecosystem that is diverse and able to provide for the needs of the organisms living
  15. 24. factors: living factors in the environment
  16. 27. growing of plants
  17. 29. factors: non-living factors in the environment
  18. 31. term used to describe a species that has not been seen in the wild for over 50 years, and of