Environment

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Across
  1. 2. all the waters on the earth's surface
  2. 4. fog or haze intensified by smoke or other atmospheric pollutants
  3. 6. refuge or safety from pursuit, persecution, or other danger
  4. 7. forest clearance is the removal of a forest
Down
  1. 1. prevention of wasteful use of a resource
  2. 3. the presence in or introduction into the environment of a substance which has harmful or poisonous effects
  3. 5. capable of being renewed