Biology, 02.11.2020 02:00 robrod75

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

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18. Which of these statements about particulate matter less than 2.5 microns in diameter is true?

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