Earth day crossword puzzle

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Across
  1. 2. trash left lying in an open or public place
  2. 4. the whole mass of air surrounding the Earth
  3. 7. able to be maintained at a certain rate or level
  4. 9. contaminate with harmful or poisonous substances
  5. 10. surroundings in wich life exists on Earth
Down
  1. 1. decayed organic material used as plant fertilizer
  2. 3. a community of living organisms
  3. 5. releasing something from a source, such as gas, heat, light, or particals
  4. 6. Power from the suns radiation
  5. 8. a place to dispose or refuse and other waste material