What can gas furnaces cause?
matter vibrating Pollution rain Stale air condensation emissions suffocation friction
A B C D E F G H
Excessive accumulation build-up of carbon monoxide can cause suffocation.
gas furnaces can cause suffocation
What can gas furnaces cause? (A) matter vibrating (B) Pollution (C) rain (D) Stale air (E) condensation (F) emissions (G) suffocation (H) friction