a breathing mask keeps what from being inhaled and causing health problems?
cigarettes harmful particles chemical changes influenza oxygen particles hydrogen and oxygen air particles atmosphere particles
A B C D E F G H
When inhaled, the particles lodge in the respiratory system, causing or aggravating health problems.
a breathing mask keeps harmful particles from being inhaled and causing health problems.
a breathing mask keeps what from being inhaled and causing health problems? (A) cigarettes (B) harmful particles (C) chemical changes (D) influenza (E) oxygen particles (F) hydrogen and oxygen (G) air particles (H) atmosphere particles