You are presented with the question "What kind of process can have a negative impact on an environment?" and the following answer choices: 
- coal
 - natural
 - Pesticides
 - flooding
 - cigarettes
 - Smoking
 - Cars
 - burning

Now knowing that erosion of soil has a negative impact on the environment and soil Erosion Soil erosion is a natural process, choose the best answer.


 

  natural       