You are presented with the question "What will decrease when seasons change from summer to fall?" and the following answer choices: 
- pH
 - history
 - darkness
 - RNA
 - UV
 - Sun
 - N
 - fun

Now knowing that when the seasons change from the summer to the fall , the amount of daylight will decrease and all daylight contains a large UV component, choose the best answer.


 

     UV    