What is PM 2.5 in Air Pollution?
What is PM 2.5? PM 2.5 stands for Particulate Matter that measures 2.5 microns or less. Just for perspective, PM2.5 is over 30 times smaller than a particle of beach sand. It’s pretty hard to see one particle of sand, so this means that PM2.5 is not visible to the naked eye. Today, we delve … Continuer la lecture