Environment-1

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Across
  1. 3. to make less rubbish
  2. 4. a large number of water covering an area
  3. 5. to keep safe from injury, harm or destruction
  4. 7. An area of land where large amount of waste materials are dumped under the earth
  5. 8. something making land water or sky dirty
  6. 9. to treat things that have already been used to use it again
Down
  1. 1. The act of cutting down or burning trees in an area
  2. 2. to use something again
  3. 6. to watch and help an animal or environment