Nature in Fall Crossword Puzzle

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Across
  1. 2. fruit of an oak tree
  2. 6. these non-green plants can be seen on tree bark
  3. 8. often found growing on tree bark
  4. 10. woodpecker may make these in tree trunks
  5. 11. this green color disappears from leaves in fall
  6. 12. this outside layer helps protect birds in winter
  7. 14. an animal that may fly south for the winter
  8. 15. sunlight and this help a tree grow
Down
  1. 1. the layer on the outside of a tree trunk
  2. 3. tell the age of a tree by counting these
  3. 4. make up all living things
  4. 5. a bear's deep sleep in winter is called
  5. 7. some trees have these instead of leaves
  6. 9. fallen leaves rot to form
  7. 11. a tree that bears cones is a
  8. 13. the home of an animal