environmental issues crossword puzzle

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Across
  1. 3. the death of a species
  2. 5. fighting countries
  3. 6. forest removal
  4. 7. catching then releasing fish
  5. 10. drilling holes in the ocean seabed
  6. 16. growth of machine production and factories
  7. 17. a colorless, highly toxic, and flammable gas
  8. 18. to much humans
  9. 20. gases in the atmosphere that raise the surface temperature
Down
  1. 1. a natural habitat gets destroyed
  2. 2. drilling for gas and oil
  3. 4. not putting in in the trash
  4. 8. catching too many fish
  5. 9. over using natural resources
  6. 11. a natural fuel such as coal or gas
  7. 12. illegal hunting
  8. 13. temperature shift
  9. 14. small plastic pieces in the ocean
  10. 15. harmful to environment
  11. 19. waste being buried in a big amount