1. Concentrations are elevated by hot, sunny days: 2. Increases exposure of organisms to ultraviolet light:
3. Caused by halocarbons, such as chlorofluorocarbons (CFCs):
4. Forms from emissions of sulfur dioxide:
5. Montreal Protocol aimed to reduce emissions that cause this:
6. A reaction between pollutants and atmospheric compounds that creates over 100 different chemicals:
7. Leaches plant nutrients from soils: 8. Most pronounced in cities prone to inversion events:

1. photochemical smog
2. stratospheric ozone depletion
3. acid deposition