Environment

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Across
  1. 1. to make an area or substance, usually air, water, or soil, dirty or harmful to people, animals, and plants
  2. 4. to become or to make something become smaller
  3. 7. able to be used more than once
  4. 9. not harmful to the environment
Down
  1. 2. poisonous, or relating to poisonous substances
  2. 3. relating to the protection of the environment
  3. 5. Something that needs to go to trash after use
  4. 6. to use something again for a different purpose
  5. 8. able to decay naturally and in a way that is not harmful