Human Impact

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Across
  1. 2. community of living things
  2. 5. harmful substances in nature
  3. 7. to clear forests
  4. 9. time yet to come
  5. 11. to maintain over time
  6. 14. natural surroundings
  7. 15. remains of ancient life
Down
  1. 1. existing in nature
  2. 3. to become different
  3. 4. group of similar organisms
  4. 6. variety of life
  5. 8. relating to people
  6. 10. material burned for energy
  7. 12. effect or influence
  8. 13. series of actions or steps