Environment-1

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Across
  1. 5. the act of cutting down or burning trees in an area
  2. 6. a large number of water covering an area
Down
  1. 1. to make less rubbish
  2. 2. to watch and help an animal or the environment
  3. 3. an area of land where large amount of waste material are buried under the earth
  4. 4. to use something again