Nature crossword

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Across
  1. 2. Rough paths, routes followed by animals.
  2. 4. Large expanses of fresh water.
  3. 7. There are four of these each year.
  4. 8. Night birds, with large eyes.
  5. 9. Whirlwinds, twisters.
  6. 10. Animal or insect that causes damage.
  7. 11. Area around the North Pole.
Down
  1. 1. A root vegetable, usually white inside.
  2. 3. Rapidly rotating atmospheric systems.
  3. 5. It sometimes falls as flakes in winter.
  4. 6. Large animal associated with Father Christmas.
  5. 8. Large European hardwood tree.