Fact 1: Disease-causing microbes have a negative impact on the body.

Fact 2: Microbes are also called microorganisms.

Given the two facts above, answer the question "What has a negative impact on the body?" with the following options: 
- disease-causing microorganisms
 - air
 - water
 - wind and erosion
 - food
 - smallest agents of disease
 - exposure to cold
 - influenza orthomyxoviruses


 

 disease-causing microorganisms        