Air Quality

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Across
  1. 2. air pollution resulting from the combination of gases produced by burning fossil fuels
  2. 3. a colorless gas produced by decomposing landfill waste and animal food digestion
  3. 4. devices that use a liquid spray to remove pollutants from the air
  4. 8. the lowering of the pH of the ocean caused by increased levels of carbon dioxide
  5. 9. energy obtained from the interaction of sunlight with photovoltaic cells
  6. 10. precipitation that contains a higher than usual concentration of sulfuric and nitric acids
Down
  1. 1. energy obtained from heat stored in the earth that is converted to a usable form
  2. 5. energy obtained from the spinning of wind turbines that is converted to usable forms
  3. 6. the process of removing small solid particles, like dust, from air
  4. 7. a colorless and odorless gas produced from the decay of radium