Sterloam

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Across
  1. 2. a bunch of trees
  2. 5. can be degraded
  3. 7. a layer of the atmosphere
  4. 9. reuse
  5. 10. can be renewed
Down
  1. 1. changing the land and planting plants
  2. 3. the most vital plant
  3. 4. something involving oxygen
  4. 6. layers of gas above Earth
  5. 8. not dirty