Which of the following changes to the shape of your face is most likely to cause your respirator to malfunction a growing a beard or mustache b not shaving regular and having noticeable stubble c gaining or losing a lot of weight d all of the above

Gaining or losing a lot of weight will changes the shape of your face and is most likely to cause your respirator to malfunction.

                                                        water

a colorless, transparent, odorless, tasteless liquid that forms the seas, lakes, rivers, and rain and is the basis of the fluids of living organisms.

                                                        halon  

any of a number of unreactive gaseous compounds of carbon with bromine and other halogens, used in fire extinguishers, but now known to damage the ozone layer.

                                                  dry chemical

extinguishing agent used on class a, class b, and class c fires.

                                                  carbon dioxide

a colorless, odorless gas produced by burning carbon and organic compounds and by respiration. it is naturally present in air (about 0.03 percent) and is absorbed by plants in photosynthesis.