Nature and The Environment

Edit Answers
123456789101112131415161718192021
Across
  1. 2. visibility unable to see clearly or far
  2. 3. dirty air
  3. 4. to use less than before
  4. 7. air
  5. 9. populated many people living in a very small area
  6. 11. the protection of plants, animals & nature
  7. 16. a long passage under the ground
  8. 19. people living in a certain area
  9. 20. to to talk or write about somebody or something
Down
  1. 1. substances if you eat these, you'll get very sick or die
  2. 3. unusual
  3. 4. able to be used again and again
  4. 5. when you guess the meaning of something from the information you have
  5. 6. to use things again
  6. 8. a facial expression which means you're confused
  7. 10. something you do with your nose
  8. 11. grow
  9. 12. the area around you
  10. 13. to enable rubbish to be used again
  11. 14. damage caused to the environment
  12. 15. blocked or crowded
  13. 17. populated few people living in a large area
  14. 18. a group of people born in the same period of time
  15. 21. the place we live