Question

Tiny ash partides as pollutants are given out by
(a) aerosol spray
(b) refrigerators
(c) air conditioner
(d) power plants​

Answer 1

Answer:

A fitted face mask with a PM2. 5 filter offers a high degree of filtration from particles in the air. PM 2.5 refers to these filters' original use as protection against particle pollution less than 2.5 micrometers wide.