ashtonbillups
ashtonbillups
28.04.2021 • 
Biology

Which statements describe the effects of indoor pollution? Select two options. Ultrafine particles cause poor health.
Nose hairs and mucus catch all the particles before they reach the lungs
Ultrafine particles are absorbed by the lungs when people breathe.
Ultrafine particles contribute to more than 20,000 deaths per year in the United States.
Most ultrafine particles can be seen with the unaided eye.

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