You are presented with the question "What can cause the pH of the soil to increase?" and the following answer choices: 
- incineration
 - dry conditions
 - Greenhouse gases
 - clean water
 - contamination
 - air
 - erosion
 - clean rain

Now knowing that air pollution can cause the pH of soil to decrease and incineration releases pollutants into the air, choose the best answer.


 

 incineration        