You are presented with the question "what and excessive crop irrigation enhance negative impacts on the environment" and the following answer choices: 
- contamination
 - drought
 - humans disturb it
 - Pollution
 - Greenhouse gasses
 - Deforestation
 - uncontrolled
 - threatened

Now knowing that erosion of soil has a negative impact on the environment and soil erosion Deforestation and excessive crop irrigation enhance soil erosion, choose the best answer.


 

      Deforestation   