U3 Trees and us

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Across
  1. 2. the part of a tree that grows out from the trunk
  2. 4. to move from one place to another over an area
  3. 5. to share or exchange information with others
  4. 8. a thin piece of wood
  5. 10. not making any sound
  6. 13. to make a hole in the ground
  7. 14. a letter, sign or mark used in writing
  8. 18. the natural world around us
  9. 19. an empty space in something solid
  10. 20. large objects like tables and chairs in a house
  11. 23. the process of changing words into another language
  12. 24. to take and use something that belongs to others
Down
  1. 1. something bad that happens unexpectedly
  2. 3. a group of plants or animals that are similar
  3. 5. to make something new
  4. 6. something that is made or grown to be sold
  5. 7. understanding or information that you have
  6. 9. easy to use or do
  7. 11. to not see or notice something
  8. 12. one of the flat surfaces of something
  9. 15. a person rather than an animal or machine
  10. 16. to behave towards someone or something in a certain way
  11. 17. a gas in the air that people and animals need to live
  12. 21. the part of a plant that grows under the ground
  13. 22. the hard material from the trunk of a tree