What are the affects of burning fuel on human health?
Options:
- (A) emissions
- (B) They aid lung health.
- (C) direct damage to the lungs
- (D) They are a hazard.
- (E) The affects are mildly healthy
- (F) The fuel burns clean.
- (G) Greenhouse gases
- (H) Global warming Let's solve this problem gradually.
Carbon monoxide is a gas produced by furnaces and other devices that burn fuel. Carbon Monoxide Carbon monoxide is a health hazard. Furnaces and other devices that burn fuel are health hazards. So the final answer is (D).