Fact 1: Ozone depletion results in higher levels of UV radiation reaching Earth.

Fact 2: Ozone absorbs ultraviolet radiation.

Given the two facts above, answer the question "What increases ultraviolet light?" with the following options: 
- heating liquids
 - clouds
 - smog
 - emissions
 - less ozone
 - gravity
 - sun's heat
 - photons


 

     less ozone    