Man & Nature

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Across
  1. 2. Harmful to nature
  2. 4. What we breath
  3. 5. Our planet
  4. 7. Harmful material
  5. 8. Use again
  6. 9. Trash
Down
  1. 1. Natural dangers
  2. 3. What surronds us on Earth
  3. 5. Living system
  4. 6. Essential for life