1. Ozone

2. Tropospheric or Stratospheric

3. Stratospheric Ozone Screens out harmful UV rays from the sun
Has been thinning due to CFC’s

4. Ozone’s Connection to Global Warming
As the stratospheric ozone layer thins, more UV light is allowed to reach Earth’s surface
Extra UV light harms plants – Phytoplankton in the ocean are reduced

5. Ozone’s Connection to Global Warming
Less phytoplankton 
Less CO2 absorbed by the ocean 
More CO2 in atmosphere 
More global warming

6. Tropospheric Ozone Harmful to living tissues
Caused by chemical reactions between various air pollutants
A major component of smog

7. Tropospheric Ozone

8. Sources of Ozone Pollution

9. Damage to Pine Needles

10. Measure Necrosis (in mm)

11. Measure Chlorosis/Chlorotic Mottle (in mm)

12. Don’t Measure Insect Damage or Chlorotic Fleck