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

Fact 2: From that time on, the respiratory system supplies the body with the oxygen it needs to survive.

Given the two facts above, answer the question "What do mold spores have a negative impact on?" with the following options: 
- survival
 - cells
 - science
 - humans
 - mold
 - plants
 - Pollution
 - light


 

 survival        