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RT @JimRosenthal4: Particles come from a wide range of sources - combustion, rubber from tires, mold, air chemistry, people, pollen, etc.…
RT @JimRosenthal4: Particles come from a wide range of sources - combustion, rubber from tires, mold, air chemistry, people, pollen, etc.…
RT @JimRosenthal4: Particles come from a wide range of sources - combustion, rubber from tires, mold, air chemistry, people, pollen, etc.…
RT @JimRosenthal4: Particles come from a wide range of sources - combustion, rubber from tires, mold, air chemistry, people, pollen, etc.…
Particles come from a wide range of sources - combustion, rubber from tires, mold, air chemistry, people, pollen, etc. This is a good study showing particle origins for both urban and rural areas in Iowa. https://t.co/jlsoVJoBL4