Unit 3 - Why do we need to take care of nature?

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Across
  1. 3. The usual weather in a place over many years.
  2. 7. A thick liquid from the ground used for fuel.
  3. 8. A large orange ape that lives in rainforests.
  4. 9. Dirty or harmful things in the environment.
  5. 10. bear A large white bear that lives in the Arctic.
  6. 12. A forest with a lot of rain and many trees.
  7. 15. How hot or cold something is.
  8. 18. To change to live better in a new situation.
  9. 19. A very large body of salt water.
  10. 20. A very dry place with little rain.
  11. 21. Frozen water.
Down
  1. 1. A desert animal with one or two humps.
  2. 2. Large areas covered with grass.
  3. 4. No longer existing; all are gone.
  4. 5. A bee that makes honey.
  5. 6. The Earth and all its people and places.
  6. 11. To stay alive.
  7. 13. A sea animal with flippers.
  8. 14. The hair on an animal's body.
  9. 16. At risk of disappearing forever.
  10. 17. The natural home of a plant or animal.