Environmental Crossword Puzzle

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Across
  1. 2. A large area covered mainly with trees.
  2. 4. The natural home of a plant or animal.
  3. 5. Study of how living things interact with their environment.
  4. 7. The physical world, including plants, animals, and landscapes.
  5. 8. To convert waste materials into new products.
  6. 9. A community of organisms interacting with each other and their environment.
Down
  1. 1. Protection and careful management of natural resources.
  2. 3. Contamination of the environment by harmful substances.
  3. 5. The power needed to do work or produce heat.
  4. 6. The planet we live on.