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

Fact 2: Benzene, like ozone and particulate matter, is a nonthreshold pollutant.

Given the two facts above, answer the question "What has a negative impact on the environment?" with the following options: 
- massive damage
 - deforestation
 - Hemp
 - harmful substances
 - Particulate matter
 - Bamboo
 - enormous damage to homes
 - Biocompostables


 

     Particulate matter    