particles and gases
USA and AQI
in the last few years
reason unclear
wildfire
warming climate
human population
4,2 million of death
134 million people at risk
What is pollution?
unhealty and dirty
air pollution
soil pollution
water pollution
What can we do
walk or ride
organically fruit and vegetables
recycle
don't litter
plant trees
carbon dioxide
methan
chlorofluorocarbons
sulfur dioxide