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Why Are Small Particulates in the Atmosphere Dangerous to Human

Question 23

Multiple Choice

Why are small particulates in the atmosphere dangerous to human beings?


A) They can enter into and lodge in very small crevices of the lungs and cause concentrated abrasive injury.
B) They grind the enamel off of teeth.
C) They absorb and concentrate other pollutants.
D) They dissolve in rivers and lakes and fill them up.

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