U1

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Across
  1. 2. a type of puzzle with a series of paths from entrance to exit
  2. 5. relating to the mind
  3. 8. the situation in which someone lives or works
  4. 11. where something comes from
  5. 12. to think about in a serious and careful way
  6. 13. the natural environment of an animal or plant
  7. 14. not kind
  8. 16. at risk of no longer existing
  9. 19. the possibility of trouble, danger or disaster
Down
  1. 1. to need
  2. 3. a group of plants or animals which share similar features
  3. 4. to feel pain or unhappiness
  4. 6. in nature, not in a zoo, on a farm or as a pet
  5. 7. a topic or problem which causes concern and discussion
  6. 9. to keep safe from danger
  7. 10. someone's or something's health and happiness
  8. 11. to continue to live, in spite of danger and difficulty
  9. 15. to become liquid as a result of heating
  10. 17. violent or unfair treatment of someone
  11. 18. to hurt