Verb, Noun, and Adjective

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Across
  1. 2. Noun: dirty things that harm the environment
  2. 3. Adjective: not clean
  3. 5. Verb: to make a place free from dirt
  4. 7. Adjective: safe for nature
  5. 8. Noun: a container for throwing rubbish
  6. 11. Verb: to use waste materials again after processing
  7. 12. Verb: to put rubbish everywhere carelessly
Down
  1. 1. Adjective: good for the environment
  2. 4. Noun: things that are no longer useful
  3. 6. Noun: the natural world around us
  4. 9. Verb: to make waste less
  5. 10. Adjective: bad for the environment