A breathing mask is used for keeping harmful particles from entering the respiratory system.
When mold grows in the house, it can emit particles that travel through the air.
A breathing mask can keep mold from entering the respiratory system. .
What can keep mold from entering the respiratory system?
[A] vaccinations
[B] layers of fat
[C] deep breaths
[D] sweating
[E] a breathing mask
[F] moisture
[G] organic molecules
[H] hydrogen and oxygen