Decreased use of atmospheric co2 is the answer. Hope this helps!:)
Its O is the anwser to your problem
Answer:When burned, fossil fuels emit particulate matter as well as carbon dioxide, nitrogen dioxide, nitric oxide (NOx), mercury and sulfur dioxide into the air. Air pollution—particularly due to diesel vehicles—is increasingly becoming one of the main causes for respiratory and cardiovascular illnesses hope it helps BRAINLIST PLZZZZZ
Explanation: