Why don’t the same trees grow everywhere?

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Across
  1. 1. a part of a tree that grows out from the trunk and usually has leaves
  2. 4. a part of a plant that is usually under the ground
  3. 6. (boreal forest)a cold, forest environment where trees often have needle-shaped leaves
  4. 8. information that can be used to support or reject an idea
  5. 9. a living thing's surroundings, including other living things and non-living parts like soil, water, and air
  6. 10. a pretend version of something
  7. 12. the inside of something, including the inside of living things
  8. 13. the thick middle part of a tree
Down
  1. 2. a physical trait or behavior that helps a living thing survive in its environment
  2. 3. a group of things that affect each other and work together as a whole
  3. 5. what something does
  4. 7. the specific form and shape of something
  5. 8. the outside of something, including the outside of living things
  6. 11. a part of a plant that is often flat and green