You are presented with the question "Reducing paper production would directly help stop what international problem?" and the following answer choices: 
- Greenhouse gases
 - obesity
 - global warming
 - cool summers
 - deforestation
 - population movement
 - antibiotic resistant bacteria
 - Greenhouse gasses

Now knowing that creating paper requires cutting down trees and saving trees helps stop global warming, choose the best answer.


 

   global warming      