UNIT 7

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Across
  1. 4. buildings or places where people live
  2. 5. too much; more than necessary
  3. 6. how efficiently work is done or goods are produced
  4. 8. the release of substances (like gases) into the air
  5. 10. basic systems like roads, water, and power
  6. 11. dangerous
  7. 12. how crowded or closely packed something is
  8. 13. focus on money and possessions rather than values
  9. 16. to supply water to land or crops
  10. 18. to move from one place to another
  11. 20. increasing very quickly over time
  12. 21. extremely large or great
  13. 22. the process of something becoming worse or less valuable
  14. 23. causing great damage or destruction
Down
  1. 1. impossible to repair or fix
  2. 2. the variety of plant and animal life in a particular area
  3. 3. the amount produced, especially crops
  4. 7. to introduce new ideas or methods
  5. 8. spending or using more than needed
  6. 9. overcrowding, especially of traffic or people
  7. 14. in short supply; not enough
  8. 15. main or most important
  9. 17. very deep or serious
  10. 19. not given enough care or attention
  11. 21. a new idea, method, or invention