Environment

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Across
  1. 3. damage caused to water, air, etc. by harmful substances or waste
  2. 5. the fact of soil, stone, etc. being gradually damaged and removed by the waves, rain, or wind
Down
  1. 1. the process of making something dirty or poisonous, or the state of containing unwanted or dangerous substances
  2. 2. the cutting down of trees in a large area, or the destruction of forests by people
  3. 4. a building with a roof and sides made of glass, used for growing plants that need warmth and protection