Question

What is called fine dust floating in the atmosphere​

Answer 1

Answer:

Particle pollution, also called particulate matter or PM, is a mixture of solids and liquid droplets floating in the air.

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Answer 2

Aerosols: Tiny Particles, Big Impact. ... Toxicologists refer to aerosols as ultrafine, fine, or coarse matter. Regulatory agencies, as well as meteorologists, typically call them particulate matter—PM2.5 or PM10, depending on their size. In some fields of engineering, they're called nanoparticles...

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