What has a negative impact on the sinuses?
A virus viruses an object carbon dioxide air mold spores disease oxygen
A B C D E F G H
Sinusitis Sinuses are a part of the upper respiratory system.
a mold spore has a negative impact on the sinuses
What has a negative impact on the sinuses? (A) A virus (B) viruses (C) an object (D) carbon dioxide (E) air (F) mold spores (G) disease (H) oxygen