Labels:text | cartoon | screenshot OCR: THE PARTICLE MENACE 3 The more particles, the higher the death rate. Many particles Relative death During heavy are so small that pollution we they penetrate deep Steubenville, Ohio inhale SO into the lung, where million they accumulate and particles cause heart disease, 1.5 in each The air by a. mechanism Harriman, breath. passages of yet to be Tennessee the lungs branch understood. St. Louis@ Into smaller and smaller tubes. ending in hundreds of millions of Watertown Massachusetts alveoli. Topeka, Kansas Portage Alveoll Wisconsin Source: Schwartz & Dockery 5 10 15 20 25 30 35 Fine Particles [ mg/m3 )
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