Fact 1: Adrought can change the color of an environment from green to brown.

Fact 2: Leaves fall off during drought or cold conditions.

Given the two facts above, answer the question "leaves turn brown in which season?" with the following options: 
- july
 - winter
 - mild
 - summer
 - dormant
 - spring
 - break off
 - rainy


 

  winter       