Natural Resources

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Across
  1. 5. To use less.
  2. 7. Natural substance that we use.
Down
  1. 1. Can only be used once.
  2. 2. The number and variety of living things.
  3. 3. Making new products from used.
  4. 4. The presence of harmful substances in an environment.
  5. 6. To use again.
  6. 8. Can be used again and again.