Human health can be affected by the changes in air quality because, in china they have one day a year where no one is allowed to drive or use equipment or else they will be arrested, and according to number lines of peoples health that live in china people are much more healthy and their body has a better immune system because it doesn't have to fight the bad toxins that are going into their bodies. and so our immune system can be affected, we can get different diseases and many other things all because we pollute this beautiful earth.
tell me if this helps
