Unit 2 review

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Across
  1. 5. Substances released directly into the air which have harmful effects
  2. 8. The main source of greenhouse gas emissions at 27% of them
  3. 10. the number of these weather events have tripled and become longer lasting
  4. 12. Atmospheric conditions over short periods of time
Down
  1. 1. This is released when something is burned with a limited amount of oxygen
  2. 2. the main gas produced when fossil fuels are burned
  3. 3. ozone layer protects us from what
  4. 4. infrared radiation
  5. 6. type of radiation that makes molecules rotate
  6. 7. air pollution that reduces visibility
  7. 9. the number of these weather events have tripled and become longer lasting
  8. 11. contains a rich store of carbon in the form of various organic compounds