Natural themes

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Across
  1. 2. the effects of one thing on another
  2. 4. the question that geographers always need to ask
  3. 5. how an outcome is produced
  4. 7. natural shapes that are produced on the earths's surface
Down
  1. 1. the way people affect the environment
  2. 3. never remaining the same
  3. 6. the act of constant change
  4. 8. connected with people