Earth Day

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Across
  1. 1. a colorless unstable toxic gas with a pungent odor
  2. 4. protect (something, especially an environmentally or culturally important place or thing) from harm or destruction.
  3. 6. contaminate (water, air, or a place) with harmful or poisonous substances.
  4. 8. a place to dispose of refuse and other waste material by burying it and covering it over with soil, especially as a method of filling in or extending usable land.
  5. 9. relating to or determined by the sun
Down
  1. 2. the production and discharge of something, especially gas or radiation.
  2. 3. reuse (discarded objects or material) in such a way as to create a product of higher quality or value than the original.
  3. 4. decayed organic material used as a plant fertilizer.
  4. 5. (of a species, family, or other group of animals or plants) having no living members; no longer in existence.
  5. 7. trash, such as paper, cans, and bottles, that is left lying in an open or public place.