Fact 1: Amold spore has a negative impact on the respiratory system.

Fact 2: Insects also have both a heart and a respiratory, or breathing, system.

Given the two facts above, answer the question "Mold spores have what impact on breathing?" with the following options: 
- neutral
 - ambiguous
 - symptoms
 - motility
 - positive
 - dangerous
 - negative
 - uncontrolled


 

       negative  