You are presented with the question "What usually has a negative impact on the environment?" and the following answer choices: 
- cigarettes
 - humans disturb it
 - harmful substances
 - sunlight
 - deforestation
 - erosion of dirt
 - rainfall
 - moon phases

Now knowing that erosion of soil has a negative impact on the environment and dirt is really misplaced soil, choose the best answer.


 

      erosion of dirt   