Fact 1: Erosion of soil has a negative impact on the environment.

Fact 2: Cattle can cause soil erosion.

Given the two facts above, answer the question "what can have a negative impact on the environment?" with the following options: 
- toxins
 - trees
 - Cars
 - cattle
 - tar
 - nutrients
 - h2o
 - coal


 

    cattle     