CROSSWORD

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Across
  1. 4. air movement used for power
  2. 5. very hot period
  3. 7. energy that doesn’t run out
  4. 8. main greenhouse gas
  5. 11. height of the ocean
  6. 12. extreme weather with wind and rain
  7. 15. too little water
  8. 17. gases released into the air
  9. 18. traps heat like a plant house
  10. 21. turning waste into reusable materials
  11. 22. eco-friendly way to travel
  12. 23. can keep going without harming the planet
Down
  1. 1. floating ice in oceans
  2. 2. fuel from plants or animals
  3. 3. cutting down lots of trees
  4. 6. giant ice block
  5. 9. rising global temperature
  6. 10. too much water
  7. 11. gives us energy
  8. 13. how hot or cold it is
  9. 14. element in greenhouse gases
  10. 16. helps absorb CO2
  11. 19. layer protecting Earth from UV
  12. 20. humans making Earth dirty
  13. 23. energy from the sun