Fact 1: Landfills have a negative impact on the environment.

Fact 2: Most garbage is buried in landfills.

Given the two facts above, answer the question "Most buried garbage has what impact on the environment?" with the following options: 
- good
 - neutral
 - positive
 - reduced heat
 - erosion
 - negative
 - protect them
 - uncontrolled


 

      negative   