Environment & Ecology · Air Pollution
What is the typical size of respirable suspended particulate matter (PM) floating in the air that can penetrate deep into the lungs?
- 1Less than 5 microns✓
- 2More than 10 microns
- 3Between 10 and 20 microns
- 4Between 20 and 50 microns
Correct answer
Less than 5 microns
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