[speaker001:] I've heard of ground-level ozone but can you explain what it is exactly?
[speaker002:] Yes, it's one of the main air pollutants. Factories don't emit it directly into the air. It's actually formed when nitrogen oxides and VOC emissions come into contact with heat and sunlight.
[speaker001:] Sorry? What does VOC stand for?
[speaker002:] Oh, Vous are " volatile organic compounds ". That's a technical term for solvents or other chemicals found in things like paint.
[speaker001:] So, what damage does ozone do to the environment?
[speaker002:] Well, it can cause smog, which can affect people's health especially people with breathing difficulties.