Biology, 10.05.2021 07:00 Ciarrathereal

16. Which of these statements about particulate matter less than 2.5 microns in diameter is true? A. They're less of a threat than particulate matter that's 10 microns in diameter.
B. They're the size of a human hair.
C. They can cause heart and lung disease.
D. They're produced from nitrogen gas (N2).

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