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

Fact 2: Ozone depletion in the stratosphere is a global problem .

Given the two facts above, answer the question "stratosphere composition causes higher levels of what reaching Earth" with the following options: 
- aliens
 - dust
 - scattered light
 - photons
 - emissions
 - ozone
 - UV radiation
 - sunlight


 

       UV radiation  