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

Fact 2: Landfills are a designated place where garbage is buried underground.

Given the two facts above, answer the question "what has a negative impact on the environment?" with the following options: 
- summer
 - massive damage
 - harmful substances
 - gravity
 - deforestation
 - underground garbage
 - h2o
 - enormous damage to homes


 

      underground garbage   