How a tree grows

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Across
  1. 3. vessels that carry water up from a tree's roots
  2. 4. energy source for photosynthesis
  3. 6. a gas used to make a tree's food is __ dioxide.
  4. 7. where food is made in a tree
  5. 8. vessels that carry food from leaves to other tree parts
  6. 10. tiny tubes that absorb water and root__.
  7. 12. release of water from a tree's leaves
Down
  1. 1. gas produced when a tree makes its food
  2. 2. cell layer that makes new xylem and phloem
  3. 4. type of food a tree makes in its leaves
  4. 5. a tool used to learn the age of a tree is an increment __
  5. 6. it gives leaves their green color
  6. 9. Xylem that is no longer active
  7. 11. count these to tell a tree's age
  8. 13. how a tree makes its food