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

Fact 2: Ozone is represented chemically as O3.

Given the two facts above, answer the question "The depletion of what results in higher levels of UV radiation reaching Earth?" with the following options: 
- O3
 - O2
 - oil
 - pan
 - h2o
 - CO2
 - DNA
 - DDT


 

 O3        