Fun Crossword bout deforestation

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Across
  1. 4. cutting down trees and preparing them to be transported as timber
  2. 5. to replant trees
  3. 6. something that is added to the environment that is harmful to living things
Down
  1. 1. the place where living things live in
  2. 2. the action of clearing a wide area of trees
  3. 3. a science which involves maintaining and caring for trees in a forest