1.dialing "911" and calling for is important, but every second counts during a medical emergency. ~true ~false 2.cpr should only be performed when a person does not have a pulse. ~true ~false 3.whenever you suspect a person is choking, the heimlich maneuver should be performed immediately. ~true ~false 4.the letters "cpr" mean cardiopulmonary respiration. ~true ~false 5. it is important to recognize a person who is in need of first aid from choking, from someone who is not. ~true ~false 6.when a person is unconscious and not breathing but has a pulse, he or she is in respiratory arrest. ~true ~false 7.more than 3,000 americans die each year from choking. ~true ~false 8.the heimlich maneuver was developed and introduced by dr. henry heimlich in 1974. ~true ~false 9.most head and facial injuries cannot be prevented by wearing protective gear and following simple safety procedures. ~true ~false 10. injuries to the neck, head, and face, are usually minor and do not require medical attention. ~true ~false me really important

well when looking at this if you think about it   negativley and positivley   react with each other and when the first layer gets full they add layers it starts with 2 on the first layer and it constantly goes on until the official number is there

                                                        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.