What harms the respiratory and circulatory systems?
Options:
- (A) Greenhouse gasses
- (B) burning coal
- (C) inoculation
- (D) incinerated mercury
- (E) fossil fuels
- (F) water vapor
- (G) Sulfur dioxide
- (H) air Let's be accurate as possible.
user
Air pollution harms the respiratory and circulatory systems. Incinerated mercury pollutes the air. Incinerated mercury harms the respiratory and circulatory systems.
The final answer: (D).
assistant