Environment

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Across
  1. 5. Interdependence of living organisms and their environment
  2. 6. Solid part of the Earth's surface
  3. 7. Effect of pollution on the environment
Down
  1. 1. Role of humans in protecting the environment
  2. 2. Effort to protect and preserve natural resources
  3. 3. Layer of gases surrounding the Earth
  4. 4. Community of living organisms and their environment