Humans and environment

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Across
  1. 3. Preservation
  2. 6. Earth's surroundings
  3. 7. The natural world
  4. 8. Long-term weather patterns
  5. 9. Worldwide
  6. 10. Trees lost
Down
  1. 1. Long-term viability
  2. 2. Contamination of air, water, or soil with harmful substances.
  3. 4. Sustainable
  4. 5. threatened existence.