Earth Day

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Across
  1. 2. the envelope of gases surrounding the earth or another planet.
  2. 6. decayed organic material used as a plant fertilizer
  3. 8. the production and discharge of something, especially gas or radiation.
  4. 10. the surroundings or conditions in which a person, animal, or plant lives or operates.
Down
  1. 1. the ability to be maintained at a certain rate or level.
  2. 3. a biological community of interacting organisms and their physical environment.
  3. 4. trash such as paper, cans, and bottles, that is left lying in an open or public place.
  4. 5. 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. 7. the presence in or introduction into the environment of a substance or thing that has harmful or poisonous effects.
  6. 9. relating to or determined by the sun.