Ethan griffin is a young patient at your clinic. he has cronic asthma and takes several medications to control his asthma attacks. the physician has recommended that ethans parents use a peak flow meter at home. how would you explain to ethans parents the importance of perfoming the peak flow meter measurement and documenting his results for medical office

                                                        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.