Respuesta :
the more harmful gas released into the air the harder plants and animals have to work to breath and some gasses can cause lung disease or cancer.
Answer:
It would be B.
Explanation:
A) Plants cannot complete the process of photosynthesis.
B) It causes respiratory disorders in humans and animals.
C) Microorganisms thrive under these conditions and grow in number.
D) The gases mix with rain and add more nutrients to aquatic ecosystems.