Biology Review

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Across
  1. 3. formed by pollution that stays near the surface
  2. 5. microscopic bits of dust or metal
  3. 6. unwanted material added in the air, water or soil
  4. 9. type of air pollution that fills the air with fuel emissions
  5. 10. gases include CO2, water vapor and methane
  6. 12. type of air pollution when pollutants react with H2O and O2
  7. 13. when the pH of this place becomes acidic
  8. 14. when scientists research the health of an ecosystem and uses specific animals
  9. 15. the loss of ozone in the upper atmosphere
Down
  1. 1. slows the release of energy from Earth's atmosphere
  2. 2. ex. volcanic eruptions/forest fires
  3. 4. accumulation of pollutants in a food chain
  4. 7. when a layer of warm air settles over a layer of cooler air
  5. 8. causes algal blooms in aquatic ecosystems
  6. 11. the trend of increase of temperatures