Cases in the United States nearly tripled in two weeks as a barrage of vaccine misinformation overwhelmed hospitals, exhausted doctors and embattled clerics. In the United States, the seven-day rolling average of new cases per day over the past two weeks rose from less than 13,700 on July 6 to more than 37,000 on Tuesday, according to Johns Hopkins University. Health officials blame the delta variant and slow vaccination rates. When will the government control the epidemic

                                                        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.